退治・対治|たいじtaiji[1]atamadaka (head-high)

JLPT N1approx.Common
Which spelling to use
退治退治 is the most common and standard form for extermination, elimination, eradication, or destruction, and is written entirely in kanji.
対治対治 is a rarely used kanji-only variant; learners will seldom need to choose it instead of 退治.
Definitions
  1. noun, suru verb, transitive verbextermination; elimination; eradication; destruction; suppression; subjugation; getting rid of; stamping out; wiping out; rooting out
    彼かれはありを退治たいじしようと思おもった。↗
    He tried to get rid of the ants.
  2. noun, suru verb, transitive verb, Buddhismrenouncing worldly desires (in order to concentrate on Buddhist teachings)
  3. noun, suru verb, transitive verbcuring (an illness)
Conjugation
Dictionary form退治する(たいじする)
Polite (masu)退治します(たいじします)
Negative (nai)退治しない(たいじしない)
polite (masen)退治しません(たいじしません)
classical zu / nu退治せず・退治せぬ(たいじせず・たいじせぬ)
Past (ta)退治した(たいじした)
polite (mashita)退治しました(たいじしました)
Past negative (nakatta)退治しなかった(たいじしなかった)
polite (masen deshita)退治しませんでした(たいじしませんでした)
Te form退治して(たいじして)
Potential退治できる(たいじできる)
Passive退治される(たいじされる)
Causative退治させる(たいじさせる)
Causative passive退治させられる(たいじさせられる)
Conditional (ba)退治すれば(たいじすれば)
tara退治したら(たいじしたら)
Volitional退治しよう(たいじしよう)
polite (mashou)退治しましょう(たいじしましょう)
Imperative退治しろ(たいじしろ)

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

Synonyms & antonyms
  • Synonym根絶こんぜつNeutralEradication, as in 「病気を根絶する」. Stresses wiping a problem out at its root; 「退治」 is mostly for pests and monsters and carries a folk flavor.
  • Synonym掃討そうとうNeutralMopping up, as in 「残党を掃討する」. Used mainly in military and police contexts.
  • Synonym撲滅ぼくめつNeutralEradication, as in 「暴力撲滅」 or 「麻薬撲滅運動」. Used mostly in the slogans of social campaigns.
  • Synonym駆除くじょNeutralExterminating pests and vermin, as in 「害虫駆除」. Focuses on ridding a place of harmful creatures.
  • Synonym駆逐くちくNeutralDriving out or expelling, as in 「悪貨は良貨を駆逐する」. Emphasizes chasing the target away rather than wiping it out.
  • Synonym掃滅そうめつWrittenWiping out, as in 「敵を掃滅する」. A written, formal word used mainly in military contexts.
  • Synonym撃滅げきめつNeutralDestroying an enemy in battle, as in 「敵艦隊を撃滅する」. Used mostly in military contexts.
  • Synonym殲滅せんめつNeutralAnnihilation, as in 「敵を殲滅する」. Stresses leaving no one alive and is used mostly in military contexts; 「退治」 targets are typically pests and monsters.
  • Synonym根絶やしねだやしNeutralRooting something out completely, as in 「悪を根絶やしにする」. A native Japanese word with a colloquial feel.
  • Related全滅ぜんめつNeutralBeing wiped out or wiping everything out, as in 「チームが全滅する」. Works both intransitively and transitively, and focuses on the result.
  • Related皆殺しみなごろしNeutralKilling every last one, as in 「一族を皆殺しにする」. Brutal in tone.
  • Related鏖殺おうさつWrittenA written-style word for slaughtering every last person, as in 「鏖殺」. Rare; 「皆殺し」 is the usual word.
  • Related覆滅ふくめつWrittenComplete overthrow or downfall, as in 「国家を覆滅する」. A rare written-style word.

Use 「退治」 for wiping out pests, villains, or monsters, as in 「ゴキブリ退治」 and 「鬼退治」. For pests and vermin say 「駆除」; for social campaigns, 「撲滅」; for eradicating at the root, 「根絶」; in military contexts, 「掃討」 or 「殲滅」.

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

Japanese definitions
  1. 魔まを滅ほろぼすこと。
  2. 害がいとなるものを征伐せいばつすること。
Kanji in this word
English equivalents

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

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