いいこうい 以夷攻夷 LinksSentence search for 以夷攻夷Sentence search for いいこういKanji details for 以, 夷 and 攻Edit in JMdict Noun1. controlling foreigners by foreigners; playing one barbarian state against anotherSee also 夷を以て夷を制す Discussions Log in to talk about this word.