いる・要るiru[0]heiban (flat)
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Definitions
- godan verb, intransitive verbto be needed; to be necessary; to be required; to be wanted; to need; to want
Conjugation
| Dictionary form | いる |
|---|---|
| Polite (masu) | いります |
| Negative (nai) | いらない |
| polite (masen) | いりません |
| classical zu / nu | いらず・いらぬ |
| Past (ta) | いった |
| polite (mashita) | いりました |
| Past negative (nakatta) | いらなかった |
| polite (masen deshita) | いりませんでした |
| Te form | いって |
| Potential | いれる |
| Passive | いられる |
| Causative | いらせる |
| Causative passive | いらせられる・いらされる |
| Conditional (ba) | いれば |
| tara | いったら |
| Volitional | いろう |
| polite (mashou) | いりましょう |
| Imperative | いれ |
Common forms generated by rule; see the senses for honorific or irregular usage.
Synonyms & antonyms
- Antonym不要ふようWrittenOpposite of 「要る」: not needed, superfluous. Mostly written or used in notices, e.g. 「予約不要」.
- Antonym要らないCasualOpposite of 「要る」 and simply its negative form; colloquially you say directly that something is not needed.
Use 「要る」 to say something is needed. For the negative, speech takes the colloquial 「要らない」, while 「不要」 belongs to written prose and notices, as in 「予約不要」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese definitions
- 何かをするために、それがなくてはならない状態だ。
See also
