Japanese Ichidan Verbs and the Ru-Ending Trap
Struggling with Japanese verb conjugations? Learn how to identify Ichidan verbs and avoid common mistakes so you can speak more naturally and accurately.
Best quote from Japanese Ichidan Verbs and the Ru-Ending Trap
The 'ru' trap is the most common mistake for learners because if you classify a verb wrong, every single conjugation that follows will be wrong too. Once you look at the syllable before 'ru,' the language stops being a puzzle and starts being a logical 'drop-and-swap' system.
This audio lesson was created by a BeFreed community member
Japanese ichidan verb demystify
Frequently Asked Questions
The secret lies in the syllable immediately preceding the "ru" ending. If that syllable ends in an "i" sound (Kami-ichidan) or an "e" sound (Shimo-ichidan), the verb is likely an Ichidan verb. If the vowel before "ru" is "a," "u," or "o," it is 100 percent a Godan verb. For example, "taberu" has an "e" sound before "ru," marking it as Ichidan, while "owaru" has an "a" sound, marking it as Godan.
The Negative Test is a diagnostic tool used to identify Godan verbs that look like Ichidan verbs, such as "kaeru" (to return) or "hashiru" (to run). To perform the test, look at the verb's negative form: if it ends in "nanai" or "ranai" (like "kaeranai"), it is a Godan verb because it shifts through the vowel rows. If it simply drops the "ru" and adds "nai" (like "tabenai"), it is a true Ichidan verb.
Ichidan verbs are known for their extreme stability because their stem never changes during conjugation. Unlike Godan verbs, which shift their final vowel sound through five different rows, Ichidan verbs simply drop the final "ru" and swap it for a new ending. For example, the stem "mi" from "miru" remains exactly the same whether you are making it polite (mimasu), negative (minai), or past tense (mita).
The only two truly irregular verbs in Japanese are "suru" (to do) and "kuru" (to come). They are considered rebels because they change the pronunciation of their base or root syllable during conjugation, whereas all other verbs keep their roots consistent. "Kuru," for instance, shifts between "ku," "ki," and "ko" sounds depending on the form, making it a unique shape-shifter in the language.
"Ra-nuki kotoba" refers to the practice of "pulling out" the "ra" sound from the formal Ichidan potential form. While the textbook rule for the potential form is to add "rareru" to the stem (e.g., "taberareru"), many native speakers find this a mouthful and shorten it to "reru" (e.g., "tabereru"). This evolution helps distinguish the potential form ("can do") from the passive form ("is done"), which usually retains the full "rareru" ending.
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From Columbia University alumni built in San Francisco
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
