及ぼす (oyobosu) conjugation
to exert, to cause, to exercise
及ぼす (およぼす, oyobosu) 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 | 及ぼす oyobosu | 及ぼします oyoboshimasu | The form you look up. Also the casual present and future. |
| Plain negative | 及ぼさない oyobosanai | 及ぼしません oyoboshimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 及ぼした oyoboshita | 及ぼしました oyoboshimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 及ぼさなかった oyobosanakatta | 及ぼしませんでした oyoboshimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 及ぼして oyoboshite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 及ぼしている oyoboshiteiru | 及ぼしています oyoboshiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 及ぼしたい oyoboshitai | 及ぼしたいです oyoboshitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 及ぼそう oyobosou | 及ぼしましょう oyoboshimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 及ぼせる oyoboseru | 及ぼせます oyobosemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 及ぼされる oyobosareru | 及ぼされます oyobosaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 及ぼさせる oyobosaseru | 及ぼさせます oyobosasemasu | Make or let someone do it. |
| Causative-passive | 及ぼさせられる oyobosaserareru | 及ぼさせられます oyobosaseraremasu | Be made to do it — the long one. |
| Imperative | 及ぼせ oyobose | 及ぼしてください oyoboshitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 及ぼすな oyobosuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 及ぼせば oyoboseba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 及ぼしたら oyoboshitara | — | “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.