亡くす|なくすnakusu[0]heiban (flat)
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- godan verb, transitive verbto lose (through death; e.g. a wife, child)
Conjugation
| Dictionary form | 亡くす(なくす) |
|---|---|
| Polite (masu) | 亡くします(なくします) |
| Negative (nai) | 亡くさない(なくさない) |
| polite (masen) | 亡くしません(なくしません) |
| classical zu / nu | 亡くさず・亡くさぬ(なくさず・なくさぬ) |
| Past (ta) | 亡くした(なくした) |
| polite (mashita) | 亡くしました(なくしました) |
| Past negative (nakatta) | 亡くさなかった(なくさなかった) |
| polite (masen deshita) | 亡くしませんでした(なくしませんでした) |
| Te form | 亡くして(なくして) |
| Potential | 亡くせる(なくせる) |
| Passive | 亡くされる(なくされる) |
| Causative | 亡くさせる(なくさせる) |
| Causative passive | 亡くさせられる(なくさせられる) |
| Conditional (ba) | 亡くせば(なくせば) |
| tara | 亡くしたら(なくしたら) |
| Volitional | 亡くそう(なくそう) |
| polite (mashou) | 亡くしましょう(なくしましょう) |
| Imperative | 亡くせ(なくせ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
- Synonym失ううしなうNeutralA broad 'lose' verb covering things as well as people; 「亡くす」 is narrower, used for losing someone close, such as family or friends, to death.
- Related死に別れるしにわかれるNeutralDescribes being parted from a loved one by death, focusing on the separation itself; leans toward written prose.
Use 「亡くす」 for losing family or friends to death, as in 「父を亡くす」「友人を亡くす」. For losing in general — things or people — pick 「失う」; 「死に別れる」 frames death as a parting and suits written prose.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


