飛び込む (tobikomu) conjugation
to jump in, to leap in, to plunge into
飛び込む (とびこむ, tobikomu) 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 | 飛び込む tobikomu | 飛び込みます tobikomimasu | The form you look up. Also the casual present and future. |
| Plain negative | 飛び込まない tobikomanai | 飛び込みません tobikomimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 飛び込んだ tobikonda | 飛び込みました tobikomimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 飛び込まなかった tobikomanakatta | 飛び込みませんでした tobikomimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 飛び込んで tobikonde | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 飛び込んでいる tobikondeiru | 飛び込んでいます tobikondeimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 飛び込みたい tobikomitai | 飛び込みたいです tobikomitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 飛び込もう tobikomou | 飛び込みましょう tobikomimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 飛び込める tobikomeru | 飛び込めます tobikomemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 飛び込まれる tobikomareru | 飛び込まれます tobikomaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 飛び込ませる tobikomaseru | 飛び込ませます tobikomasemasu | Make or let someone do it. |
| Causative-passive | 飛び込まされる tobikomasareru | 飛び込まされます tobikomasaremasu | Be made to do it — the long one. |
| Imperative | 飛び込め tobikome | 飛び込んでください tobikondekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 飛び込むな tobikomuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 飛び込めば tobikomeba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 飛び込んだら tobikondara | — | “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.