Japanese Godan Verbs Are Easier Than You Think

Eli: You know, I was trying to order a coffee in Japanese the other day, and I realized I only knew the word for "drink," but I had no idea how to actually change it to say "I will drink" or "let's drink." It felt like I was missing the engine of the sentence!

Miles: That’s a perfect way to put it. Verbs really are the most important part of a Japanese sentence. In fact, people often leave out everything else and just say the verb because the context is so clear. But if you get the conjugation wrong, the whole meaning shifts.

Eli: Right, and I’ve heard there’s this one group called Godan verbs that covers the vast majority of what you’ll actually say. But "Godan" sounds a bit intimidating—like a martial arts rank or something.

Miles: It actually just means "five levels" or "five steps." It’s a super logical framework based on the five Japanese vowels: a, i, u, e, and o. Once you see how a verb like kaku, "to write," travels through those five rows, the patterns just click.

Eli: So it’s less about memorizing a thousand random rules and more about following a single map. Let’s explore how these five transformations actually work.

Miles: Exactly. And the map always starts at the same point—the Dictionary Form. In Japanese, we call this jishokei. It’s the base version you’ll find if you look a word up in a dictionary, and it’s actually the plain form for the present or future tense.

Eli: So, if I just say the dictionary form, I’m technically speaking in the present tense? Like, "I write" or "I will write"?

Miles: You've got it. And here’s the first big rule for our listeners to tuck away: every single Japanese verb in its dictionary form ends in an u sound. There are no exceptions to this. It could be u, ku, gu, su, tsu, nu, bu, mu, or ru. They all land in that u-row of the hiragana chart.

Eli: That’s a relief. At least the starting line is consistent! But wait—if they all end in u, how do we know if we’re looking at one of these Godan verbs or something else? I remember you mentioned there are three groups.

Miles: That is the million-dollar question. Identifying the verb type is the step most people skip, and if you classify it wrong, every conjugation you try to make after that is going to be a mess. Think of it like this: Godan verbs are "Group One." They are the most common. Then you have Ichidan verbs, which are "Group Two," and only two truly irregular verbs in the whole language—suru, meaning "to do," and kuru, meaning "to come."

Eli: Only two irregulars? English speakers are crying tears of joy right now. Our irregular verb list is like a novel.

Miles: Right? It’s incredibly logical. To spot a Godan verb, the easiest trick is Rule Number One: if the verb does not end in ru, it is definitely a Godan verb. Period. So yomu for "read," kaku for "write," hanasu for "speak"—all Godan.

Eli: Okay, so if it ends in mu or ku or su, I don't even have to think about it. It’s a Godan verb. But what if it does end in ru? That’s where it gets sticky, right?

Miles: That’s where the "Decision Tree" comes in. If it ends in ru, you look at the vowel sound right before that ru. If that vowel is an a, u, or o sound, it’s still a Godan verb. For example, owaru, which means "to end." The sound before ru is wa—an a sound. So, owaru is Godan.

Eli: And if the sound before ru is an i or an e? Like taberu for "eat" or miru for "see"?

Miles: Usually, those are Ichidan verbs—the "Group Two" ones. But—and this is a big "but" for our listeners—there are some sneaky Godan exceptions that end in iru or eru. Words like kaeru, "to return," or hashiru, "to run." They look like Group Two, but they’re actually Godan.

Eli: Oh, come on! There’s always a catch. How am I supposed to remember those?

Miles: I always tell people to use the "Negative Test." If you aren't sure, look at the "don't" form. For an Ichidan verb like taberu, you just drop the ru and add nai—tabenai. But for a Godan exception like kaeru, the vowel actually changes. It becomes kaeranai. If that vowel shifts, you know you’re in Godan territory.

Eli: So the "vowel shift" is the smoking gun. If the verb "travels" through those five vowel rows we mentioned earlier, it’s a Godan. That makes so much sense. It’s like the verb is physically moving across the hiragana chart to change its meaning.

Miles: That is exactly what’s happening. And that movement is what gives Godan its name—the "five rows." It’s a physical progression from a to o.

Eli: Okay, I’m ready to see this "five-row" movement in action. You mentioned kaku, "to write," earlier. How does it actually travel through those five steps?

Miles: Let’s break it down using the hiragana rows. Imagine the ka row: ka, ki, ku, ke, ko. For a Godan verb, the "root" stays the same—in this case, kak—but the ending vowel shifts to match those five sounds depending on what you want to say.

Eli: So Step One would be the a sound?

Miles: Exactly. We call this "Base One." For kaku, you change the u to a, so it becomes kaka. Now, you can’t use kaka by itself, but it’s the base for the negative form. Add nai, and you get kakanai—"I won't write."

Eli: Kakanai. Okay, that’s Step One. What about Step Two? That should be the i sound, right?

Miles: You’re a pro already. Step Two—or "Base Two"—for kaku is kaki. This is a huge one because it’s the stem for the polite form. Add masu, and you get kakimasu. This is what you’d use in a professional setting or with someone you don't know well. Interestingly, kaki can often function as a noun on its own in certain contexts.

Eli: That’s a great multitasking tip. So we’ve done a and i. Step Three is the u sound, which we already talked about as the dictionary form, right? Kaku.

Miles: Spot on. Kaku is the present and future tense. "I write" or "I will write." It’s the "Plain Form" you use with friends. Now, Step Four moves us to the e sound. Kake. This one is used for the conditional—if you add ba, it becomes kakeba, meaning "if I write."

Eli: Kakeba. "If I write, maybe I'll finally finish that novel." And what about Step Five? The o sound?

Miles: That’s the Volitional Form. For kaku, it becomes kakou. It’s often written with a long o sound—kakou. This means "let's write." It’s an invitation or a suggestion.

Eli: Wow, so just by rotating through a-i-u-e-o, we’ve gone from "won't write" to "write politely" to "will write" to "if I write" to "let's write." That is incredibly efficient. It’s like a Swiss Army knife for language.

Miles: It really is. And the beauty of the Godan system is that it works for almost every consonant. If the verb was yomu, "to read," it would follow the ma row: ma, mi, mu, me, mo. So yomanai for "don't read," yomimasu for "read politely," yomu for "read," yomeba for "if I read," and yomou for "let's read."

Eli: I’m starting to see the pattern. But I noticed you skipped a couple of forms that I use all the time—the te form and the past tense ta form. Where do those fit into the five steps?

Miles: Ah, you caught me. Those are actually special. While the five vowel steps are the core of the Godan name, the te and ta forms are like the "extra" transformations that every verb has to master. And for Godan verbs, this is where things get a little... musical.

Eli: Musical? Are we talking about rhythm or something?

Miles: In a way, yes! It’s called onbin, or "sound euphony." Basically, over hundreds of years, Japanese speakers realized that certain combinations of sounds were hard to say quickly, so they smoothed them out. This makes the te and ta forms for Godan verbs a bit more complex than the simple vowel shifts we just practiced.

Eli: Okay, so the "five steps" are the foundation, but the te and ta forms are where we really have to pay attention to the "ending" of the verb.

Miles: Exactly. Depending on whether the verb ends in ku, gu, mu, or ru, the way it becomes "past tense" or "connecting form" changes. It’s the one part of Japanese verbs that requires a little bit of memorization, but there are some great tricks to make it stick.

Eli: I’ve heard people talking about the "te-form" like it’s this big hurdle. Why is it so important?

Miles: Because the te-form is the "connector." If you want to say "I went to the store and bought milk," you need the te-form to link those two actions. If you want to make a request, like "Please write this down," you use the te-form plus kudasai. It’s arguably the most versatile form in the language.

Eli: Okay, I’m sold. How do we build it for Godan verbs? You mentioned it depends on the ending.

Miles: Right. We can group them by their dictionary endings. Let’s start with the first group: verbs ending in u, tsu, or ru. These all change to a small tsu sound plus te. It sounds like a little "double-consonant" pause. So, kau—to buy—becomes katte. Matsu—to wait—becomes matte. And uru—to sell—becomes utte.

Eli: Katte, matte, utte. It has a nice rhythm to it. What about the next group?

Miles: The next group is the "nasal" group—verbs ending in mu, bu, or nu. These all change to nde. So yomu, "to read," becomes yonde. Asobu, "to play," becomes asonde. And shinu, "to die"—the only common verb ending in nu—becomes shinde.

Eli: Yonde, asonde, shinde. That’s very different from the tte sound. It’s softer.

Miles: It is! And then we have the ku and gu endings. Verbs ending in ku usually change to ite. Like kaku becoming kaite or kiku, "to listen," becoming kiite. But if it ends in gu, it becomes ide—with a "g" sound becoming a "d" sound. So oyogu, "to swim," becomes oyoide.

Eli: Wait, you said ku "usually" changes to ite. Is there an exception?

Miles: There is exactly one major exception you need to know: the verb iku, "to go." Even though it ends in ku, it doesn't become iite. It becomes itte.

Eli: Iku becomes itte. I feel like I’ve heard that one in movies all the time. "Go!" or "I'm going!"

Miles: Precisely. And the last little group is verbs ending in su, like hanasu. These are the easiest because they just change to shite. Hanasu becomes hanashite. It’s very similar to the polite masu stem.

Eli: So we’ve got tte, nde, ite, ide, and shite. That’s a lot to keep track of! Is there a way to remember which ending goes with which sound?

Miles: Many students learn a little song to the tune of "Clementine" or "London Bridge." It goes something like: u-tsu-ru becomes tte, mu-bu-nu becomes nde, ku is ite, gu is ide, su is shite!

Eli: I can actually hear the melody in my head now. That’s clever. And you mentioned that the past tense—the ta form—is basically the same thing?

Miles: It is! That’s the "two-for-one" deal in Japanese grammar. If you know the te-form, you automatically know the past tense. Just replace te with ta and de with da. So kaite—"writing"—becomes kaita—"wrote." Yonde—"reading"—becomes yonda—"read."

Eli: That makes the mountain feel a lot smaller. Once I master the te-form patterns, I’ve basically unlocked the past tense, requests, and connecting sentences all at once.

Miles: You really have. It’s the biggest "level up" you can get in early Japanese study. But as you’re practicing these, it’s important to remember why they exist. Like we talked about with onbin, these sound changes—like the "double consonant" tte or the nasal nde—evolved naturally because they were easier to say. They aren't just arbitrary rules meant to torture learners; they’re actually shortcuts for your tongue.

Eli: I love that perspective. It makes the language feel more human—like it was shaped by real people trying to talk faster, just like we do in English with "gonna" or "wanna."

Miles: Exactly. And speaking of "shortcuts," there’s another fascinating bit of history behind some of these Godan conjugations, specifically with verbs that end in a plain u.

Eli: Okay, you’ve piqued my interest. What’s the "Ghost of the W"?

Miles: So, have you ever noticed that when we conjugate a verb like au, "to meet," into the negative form, it doesn't become aanai? It becomes awanai. There’s a random wa in there.

Eli: Now that you mention it, yeah! Where did that wa come from? According to the "five-step" rule, if the verb ends in u, the first step should just be the a sound.

Miles: You’re absolutely right. Logically, it should be aanai. But historically, many of these verbs actually had a w sound in them that has mostly disappeared from modern Japanese—except in certain conjugations. So au was more like awu. When you move to the a sound for the negative form, that w sound resurfaces, giving us awanai.

Eli: That is fascinating! It’s like a linguistic fossil that only shows up when you conjugate the verb. Does this happen with all verbs ending in just u?

Miles: Most of them, yes. Kau—to buy—becomes kawanai. Iu—to say—becomes iwanai. It’s a very consistent pattern once you know to look for it. It’s the only time the "five-step" rule feels like it’s breaking, but it’s actually just following an older version of the map.

Eli: It’s cool to see how history still breathes through the grammar. It makes it feel less like a dry textbook and more like a living thing. But speaking of "living things," we should probably talk about those "Group Three" irregulars you mentioned earlier. If suru and kuru don't follow the Godan or Ichidan rules, how do they behave?

Miles: They are the rebels of the Japanese verb world. Suru, "to do," and kuru, "to come," just have to be memorized because they change their entire sound. For example, the negative of suru isn't suranai—it’s shinai. And its potential form, "can do," is dekiriu—a completely different word!

Eli: Wow, dekiru? I knew that word, but I didn't realize it was actually the potential form of suru.

Miles: It is! And kuru is even quirkier because the way you read the kanji for "come" actually changes. In the dictionary form, it’s kuru. In the polite form, it’s kimasu. But in the negative form, it’s konai. The vowel at the beginning of the word is what’s shifting!

Eli: So instead of the ending changing, the beginning is changing? No wonder they’re in their own category.

Miles: Exactly. But here’s the good news: suru is incredibly productive. You can take almost any noun, add suru to the end, and boom—you’ve got a verb. Benkyou is "study" (the noun). Benkyou suru is "to study" (the verb). And it conjugates exactly like the irregular suru.

Eli: That’s a massive vocabulary hack. If I know a bunch of nouns, I can just tack suru on and I’ve doubled my verb count.

Miles: It’s one of the best ways to get fluent fast. But you have to be careful not to treat them like Godan verbs. You’ll never say benkyou-saranai. It’s always benkyou-shinai.

Eli: Got it. Keep the irregulars in their own special "rebel" box. Now, building on this, what happens when we want to express something more complex, like "I can write" or "I was made to write"? Do those follow the Godan steps too?

Miles: They do! And this is where the system gets really powerful. For Godan verbs, the "Potential Form"—expressing that you can do something—is actually just another shift in the vowels.

Eli: Okay, so if I want to say "I can write," which vowel row are we moving to?

Miles: We’re moving to the e-row. For kaku, you change the u to e, making it kake. Then you treat it like an Ichidan verb and add ru. So, kakeru means "can write."

Eli: Wait, did you just say I treat it like an Ichidan verb?

Miles: I did! This is a really important "pro tip" for our listeners. Once you conjugate a Godan verb into certain forms—like the Potential Form—it actually becomes an Ichidan verb for any further changes. So, kakeru is now a Group Two verb. If you want to make it polite, you just drop the ru and add masu: kakemasu.

Eli: My brain is doing a little flip-flop. So, it starts as a Godan verb (kaku), shifts vowels to become potential (kake), and then changes its "membership" to the Ichidan group for all future conjugations?

Miles: You nailed it. It’s like the verb gets a promotion and moves to a simpler group. This happens with the Passive form too. To say "to be written," you go to the a-row, add rare, and it becomes kakareru. Now it’s an Ichidan verb.

Eli: That is so systematic. It’s like the language has these built-in tracks that guide the verbs. What about the "let's do" form we mentioned—the Volitional? That was the o-row, right?

Miles: Right. Kakou. This one is used for suggestions or to express your own intention. "I think I’ll write a letter" or "Let’s write." It’s a very "warm" form of the verb, often used in casual settings.

Eli: I’m starting to feel like I can see the whole architecture of the verb now. You have the dictionary form as the center, the five vowel steps radiating out for different basic meanings, and then these "promotions" to the Ichidan group for more advanced stuff like "can do" or "is done."

Miles: That’s a beautiful way to visualize it. And when you see it that way, you realize that Japanese isn't this chaotic pile of rules. It’s more like a beautifully designed machine. But even with a great machine, you can still press the wrong buttons.

Eli: I was just going to ask about that. What are the most common ways people "break" this machine? I know I’m going to make mistakes—I’d rather know which ones are the most likely!

Miles: The biggest pitfall, hands down, is the "る-Ending Trap." Because so many verbs end in ru, people often assume they are all Ichidan verbs and try to conjugate them by just dropping the ru.

Eli: Like the exception you mentioned earlier—kaeru, "to return." If I treated it like an Ichidan verb, I’d say kaemasu for the polite form?

Miles: Exactly. But kaemasu actually comes from a different verb, kaeru, which means "to change"! So if you say kaemasu when you mean "I’m going home," you’re actually saying "I’m going to change (something)."

Eli: Oh wow, so misidentifying the verb group can literally change the entire word you’re using. That’s a pretty high-stakes mistake.

Miles: It is, which is why that "Negative Test" is so vital. Always check: is it kaenai or kaeranai? If it’s kaeranai, it’s Godan, and you have to follow the vowel-shift rules. Another common one is the verb shiru, "to know." It ends in iru, so it looks Ichidan. But the negative is shiranai, not shinai. So it’s a Godan verb.

Eli: Shiranai. Okay, I’ve definitely heard that one. "I don't know." So if I want to say "I know" politely, I have to use the i-row shift for Godan?

Miles: Precisely. Shift the u to i: shiri. Then add masu: shirimasu.

Eli: It’s all coming together. It feels like as long as I can identify the group correctly, the rest of the steps are just following the map we’ve laid out.

Miles: So, for everyone listening who wants to start using this today, let’s turn this into a step-by-step "Playbook." If you encounter a new Japanese verb, what’s the first thing you should do?

Eli: Based on what you’ve told me, Step One is: Check the ending. If it doesn't end in ru, it’s definitely Godan. If it does end in ru, look at the vowel before it.

Miles: Right. And if that vowel is a, u, or o, it’s Godan. If it’s i or e, it’s probably Ichidan, but you have to check if it’s one of those twelve common exceptions like kaeru or hashiru.

Eli: And Step Two: Once you know it’s Godan, visualize that a-i-u-e-o chart. If you want the polite form, you go to the i-row. If you want the negative, you go to the a-row.

Miles: Exactly. And don't forget the wa for verbs ending in a plain u! Then, Step Three: Master the te-form "Song." U-tsu-ru to tte, mu-bu-nu to nde, and so on. Remember that te and ta are identical in their patterns.

Eli: Step Four: Practice in context. Instead of just memorizing "kaku, kakimasu, kakanai," try to say a whole sentence. Like, "Tegami o kakimasu"—"I will write a letter." Or "Hon o yomimasu"—"I will read a book."

Miles: That is so important. Language isn't a math equation; it’s a tool for communication. One great drill is to take a "Verb Family"—a group of verbs that all have the same ending—and conjugate them all at once. For example, take the su group: hanasu (speak), kasu (lend), kaesu (return an object), and kesu (turn off). Since they all end in su, they all conjugate exactly the same way.

Eli: That’s a great way to build muscle memory. Hanashite, kashite, kaeshite, keshite. They all follow that shite pattern for the te-form.

Miles: Exactly. And finally, use your resources! Online dictionaries like Jisho.org or tools like Tangorin are incredible because they show you the full conjugation tables. If you’re ever in doubt about whether a verb is Godan or Ichidan, those sites will tell you immediately.

Eli: It’s like having a cheat sheet in your pocket. But I think the real "cheat sheet" is just understanding the five-row logic. Once you have that, you aren't just memorizing—you’re understanding how the language breathes.

Miles: "How the language breathes"—I love that. It really is about finding the rhythm. And once you find it, you’ll start hearing these patterns everywhere. You’ll be watching an anime or listening to a Japanese song, and you’ll hear a verb end in nde and think, "Aha! That’s a Godan verb that originally ended in mu, bu, or nu!"

Eli: It’s like getting X-ray vision for the language. You can see the skeleton beneath the words.

Miles: It truly is. And the more you look, the more you’ll see how consistent it really is. Even the "irregular" verbs follow their own internal logic once you get used to them. The key is just to start. Pick one verb today—maybe nomu, "to drink"—and try to take it through all five vowel steps and the te-form.

Eli: Nomanai, nomimasu, nomu, nomeba, nomou. And then nonde for the te-form.

Miles: Look at you! You’re already doing it. That’s exactly how it starts.

Eli: This has been such an eye-opener. I feel like I’ve gone from being intimidated by these "martial arts" verbs to actually wanting to get out there and practice my "five steps."

Miles: I’m so glad to hear that. Verbs really are the heartbeat of Japanese. Once you can conjugate them, you aren't just reciting phrases—you’re actually creating language. You’re building your own sentences and expressing your own thoughts.

Eli: And it’s not as scary as it looks. It’s just five vowels and a catchy song for the te-form.

Miles: Precisely. It’s a logical, beautiful system that has evolved over centuries to be as efficient as possible. It’s a reflection of the culture itself—ordered, yet full of these little historical "fossils" like the ghost of the w sound.

Eli: To everyone listening, I hope this makes your Japanese journey feel a little more manageable. Remember, every master was once a beginner who just decided to take the first step—or in this case, the first row.

Miles: Absolutely. Don't be afraid to make mistakes. Even if you accidentally say kaemasu instead of kaerimasu, people will likely understand you from context, and you’ll learn something new in the process. The important thing is to keep moving through those rows.

Eli: Thank you all for joining us today and diving deep into the world of Godan verbs. It’s been a blast exploring these patterns with you.

Miles: It really has. Take a moment today to reflect on one verb you use often. Can you identify its group? Can you see its five steps? Just that little bit of reflection can make a world of difference in your fluency.

Eli: Thanks for listening, everyone. Happy practicing, and we’ll be rooting for you as you master your "five-level" verbs.

Miles: Take care, and enjoy the rhythm of the language. It’s a beautiful thing once you start to hear it.