伝染|でんせんdensen[0]heiban (flat)
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- noun, suru verb, intransitive verbcontagion; infection
Conjugation
| Dictionary form | 伝染する(でんせんする) |
|---|---|
| Polite (masu) | 伝染します(でんせんします) |
| Negative (nai) | 伝染しない(でんせんしない) |
| polite (masen) | 伝染しません(でんせんしません) |
| classical zu / nu | 伝染せず・伝染せぬ(でんせんせず・でんせんせぬ) |
| Past (ta) | 伝染した(でんせんした) |
| polite (mashita) | 伝染しました(でんせんしました) |
| Past negative (nakatta) | 伝染しなかった(でんせんしなかった) |
| polite (masen deshita) | 伝染しませんでした(でんせんしませんでした) |
| Te form | 伝染して(でんせんして) |
| Potential | 伝染できる(でんせんできる) |
| Passive | 伝染される(でんせんされる) |
| Causative | 伝染させる(でんせんさせる) |
| Causative passive | 伝染させられる(でんせんさせられる) |
| Conditional (ba) | 伝染すれば(でんせんすれば) |
| tara | 伝染したら(でんせんしたら) |
| Volitional | 伝染しよう(でんせんしよう) |
| polite (mashou) | 伝染しましょう(でんせんしましょう) |
| Imperative | 伝染しろ(でんせんしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym感染かんせんNeutralFocuses on a pathogen entering the body (「ウイルスに感染する」), from the infected person's side; 「伝染」 stresses disease passing from one person to another.
- Synonym伝播でんぱWrittenWritten/formal term for transmission or spread (「文化の伝播」), used mostly for culture and physical waves.
- Synonym伝搬でんぱんWrittenWritten/formal term for the propagation of signals and waves, used mainly in physics and communications.
- Related広まるひろまるNeutralMeans to spread or become widespread (「噂が広まる」「病気が広まる」), with the focus on scope widening.
- Related拡散かくさんNeutralMeans diffusion (「情報の拡散」), used mostly for information spreading online and for gases.
- Related波及はきゅうNeutralRefers to influence rippling outward (「影響が波及する」), stressing chain-reaction effects.
- Related伝わるつたわるNeutralMeans to be conveyed or handed down (「気持ちが伝わる」); its range is far wider, covering feelings, news and traditions.
- Related流布るふWrittenWritten/formal term for circulating among the public (「風説の流布」), used mostly for rumours.
- Related広がるひろがるNeutralMeans to extend or spread out (「被害が広がる」), with the focus on area or scope widening.
- RelatedはびこるNeutralMeans to run rampant or grow thick (「悪がはびこる」), a negative word for weeds and undesirable things prevailing.
- Related蔓延まんえんWrittenLeans written/formal; refers to the spread of disease or bad habits (「感染症の蔓延」).
- Related行き渡るいきわたるNeutralMeans to reach every corner or person (「全員に行き渡る」), stressing thorough, even distribution.
Use 「伝染」 for a disease passing from person to person, or for feelings and yawns catching on (「伝染病」「あくびが伝染する」). Pick 「感染」 for being infected by a pathogen, 「蔓延」 for a disease spreading, 「伝播」 for cultural transmission, 「波及」 for knock-on effects.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


