伸びる (nobiru) conjugation
to extend, to make progress, to grow
伸びる (のびる, nobiru) is an ichidan verb. Ichidan verbs are the tidy ones: drop the final る and add the ending. Nothing inside the word ever changes. Every form below is tappable — hear it, then say it back.
Conjugation table
| Form | Plain (casual) | Polite (~ます) | When you use it |
|---|---|---|---|
| Dictionary / plain | 伸びる nobiru | 伸びます nobimasu | The form you look up. Also the casual present and future. |
| Plain negative | 伸びない nobinai | 伸びません nobimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 伸びた nobita | 伸びました nobimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 伸びなかった nobinakatta | 伸びませんでした nobimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 伸びて nobite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 伸びている nobiteiru | 伸びています nobiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 伸びたい nobitai | 伸びたいです nobitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 伸びよう nobiyou | 伸びましょう nobimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 伸びられる nobirareru | 伸びられます nobiraremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 伸びられる nobirareru | 伸びられます nobiraremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 伸びさせる nobisaseru | 伸びさせます nobisasemasu | Make or let someone do it. |
| Causative-passive | 伸びさせられる nobisaserareru | 伸びさせられます nobisaseraremasu | Be made to do it — the long one. |
| Imperative | 伸びろ nobiro | 伸びてください nobitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 伸びるな nobiruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 伸びれば nobireba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 伸びたら nobitara | — | “if / when ~”. The everyday conditional. |
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Why it conjugates this way
Ichidan verbs are the tidy ones: drop the final る and add the ending. Nothing inside the word ever changes.
See the full rules on the verb conjugation guide.
