空費|くうひkuuhi[0]heiban (flat)
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- noun, suru verb, transitive verbwaste; wastefulness
Conjugation
| Dictionary form | 空費する(くうひする) |
|---|---|
| Polite (masu) | 空費します(くうひします) |
| Negative (nai) | 空費しない(くうひしない) |
| polite (masen) | 空費しません(くうひしません) |
| classical zu / nu | 空費せず・空費せぬ(くうひせず・くうひせぬ) |
| Past (ta) | 空費した(くうひした) |
| polite (mashita) | 空費しました(くうひしました) |
| Past negative (nakatta) | 空費しなかった(くうひしなかった) |
| polite (masen deshita) | 空費しませんでした(くうひしませんでした) |
| Te form | 空費して(くうひして) |
| Potential | 空費できる(くうひできる) |
| Passive | 空費される(くうひされる) |
| Causative | 空費させる(くうひさせる) |
| Causative passive | 空費させられる(くうひさせられる) |
| Conditional (ba) | 空費すれば(くうひすれば) |
| tara | 空費したら(くうひしたら) |
| Volitional | 空費しよう(くうひしよう) |
| polite (mashou) | 空費しましょう(くうひしましょう) |
| Imperative | 空費しろ(くうひしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym浪費ろうひNeutralThe general, most common word for waste, as in 「時間の浪費」. 「空費」 is more literary and means wasting something in vain, especially time or effort.
- Synonym無駄遣いむだづかいNeutralColloquial term for wasting money, as in 「お金の無駄遣い」; use this in everyday speech instead of 「空費」.
- Synonym徒費とひWrittenWritten word for wasting something in vain; rare. Closest in meaning to 「空費」, which is likewise formal.
- Related不経済ふけいざいNeutralMeans uneconomical or wasteful, as in 「不経済なやり方」; the focus is on efficiency rather than on squandering.
- Related無駄むだNeutralThe everyday word for uselessness or futility, as in 「無駄な努力」; broader than 「空費」 and far more common in speech.
- Related乱費らんぴWrittenWritten word for reckless squandering, mainly of money, as in 「公金の乱費」. 「空費」 covers time and effort too.
- Related蕩尽とうじんWrittenWritten word for squandering away the family fortune, typically through dissolute living; much narrower than 「空費」.
- Related冗費じょうひWrittenWritten word for unnecessary expense, as in 「冗費削減」; limited to money, while 「空費」 also covers time and effort.
- Antonym節約せつやくNeutralAntonym: economising or saving by cutting out waste; contrasts with 「空費」, which is about wasting time or effort outright.
- Antonym有効利用ゆうこうりようNeutralAntonym: putting things or time to effective, waste-free use — the direct opposite of 「空費」.
For general waste use 「浪費」; for wasting money in daily speech, 「無駄遣い」. 「空費」 is a written word for squandering time or effort, as in 「時間を空費する」. For profligate spending, 「乱費」; for saving, 「節約」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


