吐く (haku) conjugation
to throw up, to vomit
吐く (はく, haku) 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 | 吐く haku | 吐きます hakimasu | The form you look up. Also the casual present and future. |
| Plain negative | 吐かない hakanai | 吐きません hakimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 吐いた haita | 吐きました hakimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 吐かなかった hakanakatta | 吐きませんでした hakimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 吐いて haite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 吐いている haiteiru | 吐いています haiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 吐きたい hakitai | 吐きたいです hakitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 吐こう hakou | 吐きましょう hakimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 吐ける hakeru | 吐けます hakemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 吐かれる hakareru | 吐かれます hakaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 吐かせる hakaseru | 吐かせます hakasemasu | Make or let someone do it. |
| Causative-passive | 吐かされる hakasareru | 吐かされます hakasaremasu | Be made to do it — the long one. |
| Imperative | 吐け hake | 吐いてください haitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 吐くな hakuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 吐けば hakeba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 吐いたら haitara | — | “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.