重複|ちょうふくchoufuku[0]heiban (flat)
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- suru verb, intransitive verb, no-adjectiveduplication; repetition; overlapping; redundancy; restoration
Conjugation
| Dictionary form | 重複する(ちょうふくする) |
|---|---|
| Polite (masu) | 重複します(ちょうふくします) |
| Negative (nai) | 重複しない(ちょうふくしない) |
| polite (masen) | 重複しません(ちょうふくしません) |
| classical zu / nu | 重複せず・重複せぬ(ちょうふくせず・ちょうふくせぬ) |
| Past (ta) | 重複した(ちょうふくした) |
| polite (mashita) | 重複しました(ちょうふくしました) |
| Past negative (nakatta) | 重複しなかった(ちょうふくしなかった) |
| polite (masen deshita) | 重複しませんでした(ちょうふくしませんでした) |
| Te form | 重複して(ちょうふくして) |
| Potential | 重複できる(ちょうふくできる) |
| Passive | 重複される(ちょうふくされる) |
| Causative | 重複させる(ちょうふくさせる) |
| Causative passive | 重複させられる(ちょうふくさせられる) |
| Conditional (ba) | 重複すれば(ちょうふくすれば) |
| tara | 重複したら(ちょうふくしたら) |
| Volitional | 重複しよう(ちょうふくしよう) |
| polite (mashou) | 重複しましょう(ちょうふくしましょう) |
| Imperative | 重複しろ(ちょうふくしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym繰り返しくりかえしNeutralRefers to doing the same thing over and over, as in 「繰り返し練習する」; 「重複」 is about identical or similar things overlapping, such as periods or content.
- SynonymリピートNeutralLoanword for playing something again or buying it again, as in 「リピート再生」; a repeat customer is a 「リピーター」.
- Synonym重出じゅうしゅつWrittenWritten/formal prose term for the same content turning up again in a text, as in 「同じ語が重出する」; used mainly in discussing texts and dictionaries.
- SynonymダブりCasualColloquial term, typically for ending up with an extra copy of the same thing, as in 「ダブりのカード」; mostly heard in casual talk.
- Antonym単発たんぱつNeutralMeans happening only once, not repeatedly, as in 「単発の仕事」; roughly the opposite of 「重複」, though a one-off can still overlap with something else.
- Antonym一回いっかいNeutralMeans just one occurrence, as in 「一回だけ」; contrasts with 「重複」 in number of times, but does not imply the content does not overlap.
Use 「重複」 for identical or similar things overlapping, as in 「データの重複」 or 「期間が重複する」. For doing something over and over, say 「繰り返し」; in casual speech, an extra copy of the same thing is 「ダブり」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


