9:47 Lena: Okay, Miles, we have to talk about the "imposters." If I’m following the rule that "i" and "e" before "ru" means it’s an Ichidan verb, but then I run into "hashiru" for to run, or "kiru" for to cut... my whole system falls apart!
10:04 Miles: This is the part where every Japanese learner has a brief moment of despair. These are the verbs that look exactly like Ichidan verbs but secretly follow Godan rules. They are the "Godan in Ichidan clothing."
10:19 Lena: It feels so unfair! "Hashiru" has an "i" before the "ru," so it should be "hashimasu," right? But it’s actually "hashirimasu." It’s like the verb is lying to me.
10:30 Miles: It’s not lying, it’s just... historically stubborn! Many of these verbs are very old and have held onto their Godan roots through centuries of language change. But here’s the good news: there aren't actually that many of them that you’ll use in daily life. There’s a core group of about twelve that you really need to memorize to feel confident.
10:50 Lena: Twelve? Okay, that sounds manageable. I can do twelve. What are the heavy hitters?
10:56 Miles: The big ones you’ll see every single day are "kaeru," to return, "hashiru," to run, "shiru," to know, "hairu," to enter, and "kiru," to cut. Oh, and "keru," which means to kick.
11:10 Lena: Wait, "shiru" is Godan? So it’s "shiranai" for "I don't know," not "shinai"?
2:07 Miles: Exactly! If it were an Ichidan verb, it would be "shinai." But "shinai" is actually the negative form of "suru," which means "to do." So if you conjugate "shiru" as an Ichidan, you’re accidentally saying you’re not doing something instead of saying you don't know something. See how the stakes get high?
11:34 Lena: Wow, that is a huge difference. "I don't know" versus "I don't do." I can see why getting the classification right is Step 1 for a reason.
7:52 Miles: It really is. And the best way to "test" a verb if you’re unsure—the ultimate truth serum for Japanese verbs—is the "Negative Test."
11:52 Lena: The Negative Test? Tell me more.
11:55 Miles: If you aren't sure if a verb is Ichidan or Godan, look up its negative form. If it ends in just "nai" after the stem—like "tabenai" or "minai"—it’s Ichidan. But if you see that "ra" pop up—like "hashiranai," "kaeranai," or "shiranai"—that’s the signature of a Godan verb. That "ra" comes from shifting the "ru" to the "a-row."
12:17 Lena: Ah, because Godan verbs travel through all five rows! So the "a-row" is where the negative "nai" lives for them. "Ru" becomes "ra" plus "nai."
12:28 Miles: You’ve got it. So while "taberu" becomes "tabenai"—no "ra" in sight—the imposter "kaeru" becomes "kaeranai." That extra "ra" is the smoking gun. It’s telling you, "Hey, I might look like an Ichidan, but I’m actually a Godan verb."
12:45 Lena: That is such a helpful diagnostic tool. If I’m ever in doubt, I just check the "nai" form in a dictionary. If there’s a "ra," it’s Godan. If it’s just the stem plus "nai," it’s Ichidan.
3:21 Miles: Precisely. And there are a few other tricks. For instance, look at the kanji. Sometimes the way the "okurigana"—the hiragana that sticks out from the kanji—is written can give you a clue. For an Ichidan verb like "taberu," the "be" is usually written in hiragana outside the kanji. But for a Godan exception like "kaeru," often only the "ru" is outside the kanji.
13:18 Lena: Oh, that’s a deep cut! So if the "e" or "i" sound is "trapped" inside the kanji reading, it’s more likely to be a Godan verb?
0:43 Miles: Exactly. Look at "kaeru" for to return. The "kae" is all part of the kanji reading, and only "ru" is written out. Compare that to "kaeru" for to change, which is an Ichidan verb. In that one, the "e" is usually written out as hiragana. "Ka-e-ru."
13:46 Lena: That is such a subtle distinction, but it makes so much sense when you see it on the page. It’s like the language is giving us these tiny visual breadcrumbs.
7:52 Miles: It really is. But honestly, for most learners, just memorizing the "Big Five"—return, run, know, enter, and cut—will get you 90 percent of the way there. If you can handle those, the rare ones like "kashiru," to gnaw, or "hiru," to dry, can wait until you’re reading advanced literature.
14:12 Lena: I’m feeling much better about the imposters now. It’s not an infinite list of traps; it’s just a small group of high-frequency exceptions. And I have the Negative Test as my backup.
14:23 Miles: That’s the spirit. You’re not falling for the trap; you’re learning to spot the tripwire before you step on it.