問い合わせる (toiawaseru) conjugation
to inquire, to seek information
問い合わせる (といあわせる, toiawaseru) is an ichidan verb. Ichidan verbs are the tidy ones: drop the final る and add the ending. Nothing inside the word ever changes. 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 | 問い合わせる toiawaseru | 問い合わせます toiawasemasu | The form you look up. Also the casual present and future. |
| Plain negative | 問い合わせない toiawasenai | 問い合わせません toiawasemasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 問い合わせた toiawaseta | 問い合わせました toiawasemashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 問い合わせなかった toiawasenakatta | 問い合わせませんでした toiawasemasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 問い合わせて toiawasete | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 問い合わせている toiawaseteiru | 問い合わせています toiawaseteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 問い合わせたい toiawasetai | 問い合わせたいです toiawasetaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 問い合わせよう toiawaseyou | 問い合わせましょう toiawasemashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 問い合わせられる toiawaserareru | 問い合わせられます toiawaseraremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 問い合わせられる toiawaserareru | 問い合わせられます toiawaseraremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 問い合わせさせる toiawasesaseru | 問い合わせさせます toiawasesasemasu | Make or let someone do it. |
| Causative-passive | 問い合わせさせられる toiawasesaserareru | 問い合わせさせられます toiawasesaseraremasu | Be made to do it — the long one. |
| Imperative | 問い合わせろ toiawasero | 問い合わせてください toiawasetekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 問い合わせるな toiawaseruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 問い合わせれば toiawasereba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 問い合わせたら toiawasetara | — | “if / when ~”. The everyday conditional. |
🔊 Tap any Japanese word to hear it spoken.
Why it conjugates this way
Ichidan verbs are the tidy ones: drop the final る and add the ending. Nothing inside the word ever changes.
See the full rules on the verb conjugation guide.