伸ばす (nobasu) conjugation
to extend, to stretch, to reach out
伸ばす (のばす, nobasu) is a godan verb. Godan verbs change their final kana up and down its column of the kana chart — the a-row for negatives, the i-row before ます, the e-row for potential and ば. 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 | 伸ばす nobasu | 伸ばします nobashimasu | The form you look up. Also the casual present and future. |
| Plain negative | 伸ばさない nobasanai | 伸ばしません nobashimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 伸ばした nobashita | 伸ばしました nobashimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 伸ばさなかった nobasanakatta | 伸ばしませんでした nobashimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 伸ばして nobashite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 伸ばしている nobashiteiru | 伸ばしています nobashiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 伸ばしたい nobashitai | 伸ばしたいです nobashitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 伸ばそう nobasou | 伸ばしましょう nobashimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 伸ばせる nobaseru | 伸ばせます nobasemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 伸ばされる nobasareru | 伸ばされます nobasaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 伸ばさせる nobasaseru | 伸ばさせます nobasasemasu | Make or let someone do it. |
| Causative-passive | 伸ばさせられる nobasaserareru | 伸ばさせられます nobasaseraremasu | Be made to do it — the long one. |
| Imperative | 伸ばせ nobase | 伸ばしてください nobashitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 伸ばすな nobasuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 伸ばせば nobaseba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 伸ばしたら nobashitara | — | “if / when ~”. The everyday conditional. |
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Why it conjugates this way
Godan verbs change their final kana up and down its column of the kana chart — the a-row for negatives, the i-row before ます, the e-row for potential and ば.
See the full rules on the verb conjugation guide.