外す (hazusu) conjugation
to unfasten, to remove
外す (はずす, hazusu) 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 | 外す hazusu | 外します hazushimasu | The form you look up. Also the casual present and future. |
| Plain negative | 外さない hazusanai | 外しません hazushimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 外した hazushita | 外しました hazushimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 外さなかった hazusanakatta | 外しませんでした hazushimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 外して hazushite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 外している hazushiteiru | 外しています hazushiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 外したい hazushitai | 外したいです hazushitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 外そう hazusou | 外しましょう hazushimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 外せる hazuseru | 外せます hazusemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 外される hazusareru | 外されます hazusaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 外させる hazusaseru | 外させます hazusasemasu | Make or let someone do it. |
| Causative-passive | 外させられる hazusaserareru | 外させられます hazusaseraremasu | Be made to do it — the long one. |
| Imperative | 外せ hazuse | 外してください hazushitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 外すな hazusuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 外せば hazuseba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 外したら hazushitara | — | “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.