浪費|ろうひrouhi[0]heiban (flat)
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- suru verb, transitive verb, no-adjectivewaste; extravagance
Conjugation
| Dictionary form | 浪費する(ろうひする) |
|---|---|
| Polite (masu) | 浪費します(ろうひします) |
| Negative (nai) | 浪費しない(ろうひしない) |
| polite (masen) | 浪費しません(ろうひしません) |
| classical zu / nu | 浪費せず・浪費せぬ(ろうひせず・ろうひせぬ) |
| Past (ta) | 浪費した(ろうひした) |
| polite (mashita) | 浪費しました(ろうひしました) |
| Past negative (nakatta) | 浪費しなかった(ろうひしなかった) |
| polite (masen deshita) | 浪費しませんでした(ろうひしませんでした) |
| Te form | 浪費して(ろうひして) |
| Potential | 浪費できる(ろうひできる) |
| Passive | 浪費される(ろうひされる) |
| Causative | 浪費させる(ろうひさせる) |
| Causative passive | 浪費させられる(ろうひさせられる) |
| Conditional (ba) | 浪費すれば(ろうひすれば) |
| tara | 浪費したら(ろうひしたら) |
| Volitional | 浪費しよう(ろうひしよう) |
| polite (mashou) | 浪費しましょう(ろうひしましょう) |
| Imperative | 浪費しろ(ろうひしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym空費くうひWrittenWritten/formal prose. Wasting time or money for nothing, as in 「時間の空費」; leans toward futile, pointless waste.
- Synonym無駄遣いむだづかいNeutralColloquial. Spending money carelessly; also 「時間の無駄遣い」. The most common everyday word, while 「浪費」 sounds more written.
- Synonym徒費とひWrittenWritten/formal prose for futile spending or outlay; rare in modern Japanese.
- Related不経済ふけいざいNeutralNeutral. Being uneconomical or poor value, as in 「不経済な使い方」; leans toward inefficiency rather than extravagance.
- Related冗費じょうひWrittenWritten/formal prose for unnecessary, redundant expense; leans toward administrative and budget contexts.
- Related乱費らんぴWrittenWritten/formal prose for squandering money recklessly; leans toward lavish, extravagant spending.
- Related蕩尽とうじんWrittenWritten/formal prose for squandering a family fortune until it is gone, as in 「財産を蕩尽する」; much stronger in degree.
- Antonym節約せつやくNeutralNeutral. Economising, cutting out waste and reducing costs; the direct opposite of 「浪費」.
- Antonym倹約けんやくNeutralWritten/formal prose for thrift and frugality, as in 「倹約家」; the opposite of 「浪費」.
- Antonym貯蓄ちょちくNeutralNeutral. Saving money, setting it aside; the opposite of 「浪費」 in the sense of spending versus saving.
Use 「浪費」 for wasting money, time or effort outright, as in 「時間の浪費」「浪費癖」. In everyday speech, careless spending is 「無駄遣い」; squandering a fortune is 「蕩尽」. 空費, 徒費, 冗費 and 乱費 are formal written alternatives. The opposites are 「節約」 and 「倹約」; 「貯蓄」 contrasts as saving rather than spending.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


