振舞う (furumau) conjugation
to behave, to conduct
振舞う (ふるまう, furumau) 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 | 振舞う furumau | 振舞います furumaimasu | The form you look up. Also the casual present and future. |
| Plain negative | 振舞わない furumawanai | 振舞いません furumaimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 振舞った furumatta | 振舞いました furumaimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 振舞わなかった furumawanakatta | 振舞いませんでした furumaimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 振舞って furumatte | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 振舞っている furumatteiru | 振舞っています furumatteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 振舞いたい furumaitai | 振舞いたいです furumaitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 振舞おう furumaou | 振舞いましょう furumaimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 振舞える furumaeru | 振舞えます furumaemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 振舞われる furumawareru | 振舞われます furumawaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 振舞わせる furumawaseru | 振舞わせます furumawasemasu | Make or let someone do it. |
| Causative-passive | 振舞わされる furumawasareru | 振舞わされます furumawasaremasu | Be made to do it — the long one. |
| Imperative | 振舞え furumae | 振舞ってください furumattekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 振舞うな furumauna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 振舞えば furumaeba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 振舞ったら furumattara | — | “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.