交す (kawasu) conjugation
to exchange
交す (かわす, kawasu) 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 | 交す kawasu | 交します kawashimasu | The form you look up. Also the casual present and future. |
| Plain negative | 交さない kawasanai | 交しません kawashimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 交した kawashita | 交しました kawashimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 交さなかった kawasanakatta | 交しませんでした kawashimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 交して kawashite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 交している kawashiteiru | 交しています kawashiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 交したい kawashitai | 交したいです kawashitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 交そう kawasou | 交しましょう kawashimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 交せる kawaseru | 交せます kawasemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 交される kawasareru | 交されます kawasaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 交させる kawasaseru | 交させます kawasasemasu | Make or let someone do it. |
| Causative-passive | 交させられる kawasaserareru | 交させられます kawasaseraremasu | Be made to do it — the long one. |
| Imperative | 交せ kawase | 交してください kawashitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 交すな kawasuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 交せば kawaseba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 交したら kawashitara | — | “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.