越す (kosu) conjugation
to go over (e.g., with audience)
越す (こす, kosu) 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 | 越す kosu | 越します koshimasu | The form you look up. Also the casual present and future. |
| Plain negative | 越さない kosanai | 越しません koshimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 越した koshita | 越しました koshimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 越さなかった kosanakatta | 越しませんでした koshimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 越して koshite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 越している koshiteiru | 越しています koshiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 越したい koshitai | 越したいです koshitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 越そう kosou | 越しましょう koshimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 越せる koseru | 越せます kosemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 越される kosareru | 越されます kosaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 越させる kosaseru | 越させます kosasemasu | Make or let someone do it. |
| Causative-passive | 越させられる kosaserareru | 越させられます kosaseraremasu | Be made to do it — the long one. |
| Imperative | 越せ kose | 越してください koshitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 越すな kosuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 越せば koseba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 越したら koshitara | — | “if / when ~”. The everyday conditional. |
🔊 Tap any Japanese word to hear it spoken.
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.