介入|かいにゅうkainyuu[0]heiban (flat)

JLPT N1approx.Common
Definitions
  1. noun, suru verb, intransitive verbintervention
    It has been shown in most studies on this subject that intervention of the legislature had adverse effects.
Conjugation
Dictionary form介入する(かいにゅうする)
Polite (masu)介入します(かいにゅうします)
Negative (nai)介入しない(かいにゅうしない)
polite (masen)介入しません(かいにゅうしません)
classical zu / nu介入せず・介入せぬ(かいにゅうせず・かいにゅうせぬ)
Past (ta)介入した(かいにゅうした)
polite (mashita)介入しました(かいにゅうしました)
Past negative (nakatta)介入しなかった(かいにゅうしなかった)
polite (masen deshita)介入しませんでした(かいにゅうしませんでした)
Te form介入して(かいにゅうして)
Potential介入できる(かいにゅうできる)
Passive介入される(かいにゅうされる)
Causative介入させる(かいにゅうさせる)
Causative passive介入させられる(かいにゅうさせられる)
Conditional (ba)介入すれば(かいにゅうすれば)
tara介入したら(かいにゅうしたら)
Volitional介入しよう(かいにゅうしよう)
polite (mashou)介入しましょう(かいにゅうしましょう)
Imperative介入しろ(かいにゅうしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym干渉かんしょうNeutralMeddling in others' affairs, with a negative nuance of imposing on them; also the physics term for wave interference. 「介入」 is more neutral.
  • Antonym放任ほうにんWrittenLeaving things to take their own course without interference, as in 「放任主義」; the opposite of actively stepping in.
  • Antonym放置ほうちNeutralLeaving something unattended or ignoring it, as in 「放置自転車」; contrasts with 「介入」, which is stepping in to deal with a matter.
  • Antonym不介入ふかいにゅうWrittenNoninvolvement: staying neutral and not stepping into a matter or dispute; the direct opposite of 「介入」.

Use 「介入」 for a third party stepping in to intervene, as in 「軍事介入」. For meddling with a negative nuance, use 「干渉」. For not intervening, use 「不介入」; for leaving things alone, 「放任」 or 「放置」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese definitions
  1. 事件じけんや問題もんだいなどに第三者だいさんしゃが入り込はいりこみ干渉かんしょうすること。
  2. 学習がくしゅうや行動こうどう、健康けんこうの維持いじなどについて能力のうりょくや知識ちしきなどが十分じゅうぶんでない者ものに対たいし、それらを円滑えんかつに行おこなえるよう専門家せんもんかなどが手助てだすけすること。
  3. 複数ふくすうのものの間あいだに入り込はいりこむこと。
Kanji in this word
English equivalents
See also

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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