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逆効果 / ぎゃくこうか / ぎゃっこうか : n 1）backfire 2）counterproductive 3）opposite effect P
逆断層 / ぎゃくだんそう : n 1）reverse fault
逆数 / ぎゃくすう : n 1）(math) reciprocal 2）inverse
逆撫で / ぎゃくなで / さかなで : ik n vs 1）rubbing the wrong way (e.g. a cat) 2）irritating n vs 3）rubbing the wrong way (e.g. a cat)
逆援 / ぎゃくえん : n abbr 1）women paying boys for sex
逆換 / ぎゃくかん / ぎゃっかん : n 1）(logical) inversion
逆提案 / ぎゃくていあん : n 1）counter-proposal
逆接 / ぎゃくせつ : n 1）contradictory conjunction (but, however, etc.)
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逆効果

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