疲労|ひろうhirou[0]heiban (flat)
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- noun, suru verb, intransitive verbfatigue; weariness; exhaustion; tiredness
- noun, suru verb, intransitive verbfatigue (of metal, etc.)
Conjugation
| Dictionary form | 疲労する(ひろうする) |
|---|---|
| Polite (masu) | 疲労します(ひろうします) |
| Negative (nai) | 疲労しない(ひろうしない) |
| polite (masen) | 疲労しません(ひろうしません) |
| classical zu / nu | 疲労せず・疲労せぬ(ひろうせず・ひろうせぬ) |
| Past (ta) | 疲労した(ひろうした) |
| polite (mashita) | 疲労しました(ひろうしました) |
| Past negative (nakatta) | 疲労しなかった(ひろうしなかった) |
| polite (masen deshita) | 疲労しませんでした(ひろうしませんでした) |
| Te form | 疲労して(ひろうして) |
| Potential | 疲労できる(ひろうできる) |
| Passive | 疲労される(ひろうされる) |
| Causative | 疲労させる(ひろうさせる) |
| Causative passive | 疲労させられる(ひろうさせられる) |
| Conditional (ba) | 疲労すれば(ひろうすれば) |
| tara | 疲労したら(ひろうしたら) |
| Volitional | 疲労しよう(ひろうしよう) |
| polite (mashou) | 疲労しましょう(ひろうしましょう) |
| Imperative | 疲労しろ(ひろうしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym疲れつかれNeutralThe most common everyday word for tiredness; 「疲労」 leans toward written style, as in 「疲労回復」.
- Synonym倦怠けんたいWrittenWritten/formal prose for boredom or tedium, and also for physical lassitude, as in 「全身倦怠感」; 「疲労」 stresses exhaustion after exertion.
- Synonym草臥CasualRead 「くたびれ」: a strongly colloquial word for being worn out from exertion. 「疲労」 is more formal and also serves in medical contexts and for metal fatigue.
- Related気づかれきづかれNeutralA noun for the mental and physical drain from worrying or fretting over things; it stresses the mental side, while 「疲労」 is broader, covering metal fatigue too.
- Antonym元気げんきNeutralAn antonym: a noun for being full of spirit and energy, the opposite of the exhaustion expressed by 「疲労」.
For fatigue of body, mind, or materials, use 「疲労」, as in 「疲労が溜まる」 and 「金属疲労」. In everyday speech say 「疲れ」; for mental drain use 「気疲れ」; for lassitude use 「倦怠」; colloquially say 「くたびれる」. For being energetic, use 「元気」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


