固まる (katamaru) conjugation
to harden, to solidify, to become firm
固まる (かたまる, katamaru) 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 | 固まる katamaru | 固まります katamarimasu | The form you look up. Also the casual present and future. |
| Plain negative | 固まらない katamaranai | 固まりません katamarimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 固まった katamatta | 固まりました katamarimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 固まらなかった katamaranakatta | 固まりませんでした katamarimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 固まって katamatte | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 固まっている katamatteiru | 固まっています katamatteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 固まりたい katamaritai | 固まりたいです katamaritaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 固まろう katamarou | 固まりましょう katamarimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 固まれる katamareru | 固まれます katamaremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 固まられる katamarareru | 固まられます katamararemasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 固まらせる katamaraseru | 固まらせます katamarasemasu | Make or let someone do it. |
| Causative-passive | 固まらされる katamarasareru | 固まらされます katamarasaremasu | Be made to do it — the long one. |
| Imperative | 固まれ katamare | 固まってください katamattekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 固まるな katamaruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 固まれば katamareba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 固まったら katamattara | — | “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.