基づく (motozuku) conjugation
to be grounded on, to be based on
基づく (もとづく, motozuku) 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 | 基づく motozuku | 基づきます motozukimasu | The form you look up. Also the casual present and future. |
| Plain negative | 基づかない motozukanai | 基づきません motozukimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 基づいた motozuita | 基づきました motozukimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 基づかなかった motozukanakatta | 基づきませんでした motozukimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 基づいて motozuite | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 基づいている motozuiteiru | 基づいています motozuiteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 基づきたい motozukitai | 基づきたいです motozukitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 基づこう motozukou | 基づきましょう motozukimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 基づける motozukeru | 基づけます motozukemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 基づかれる motozukareru | 基づかれます motozukaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 基づかせる motozukaseru | 基づかせます motozukasemasu | Make or let someone do it. |
| Causative-passive | 基づかされる motozukasareru | 基づかされます motozukasaremasu | Be made to do it — the long one. |
| Imperative | 基づけ motozuke | 基づいてください motozuitekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 基づくな motozukuna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 基づけば motozukeba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 基づいたら motozuitara | — | “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.