毒を以て毒を制す

どくをもってどくをせいす

fight fire with fire, set a thief to catch a thief, fight one evil with another

毒

どく

poison, toxicant

毒酒

どくしゅ

poisoned sake, poisoned alcohol

菌毒

きんどく

mushroom poison

劇毒

げきどく

deadly poison

水毒

すいどく

water poisoning (in traditional Chinese medicine, illnesses caused by excessive water accumulation within the body)

毒蛾

どくが

poisonous moth

瘡毒

そうどく

syphilis

毒矢

どくや

poisoned arrow (dart)

胎毒

たいどく

congenital eczema

毒化

どっか

toxification, turning toxic, turning poisonous

鼠毒

そどく

rat-bite fever, sodoku

酒毒

しゅどく さけどく

alcoholic poisoning

毒牙

どくが

poison fang

蛇毒

じゃどく へびどく

snake venom, snake toxin

毒刃

どくじん

assassin's dagger

毒魚

どくぎょ

poisonous fish

毒手

どくしゅ

a dirty or underhanded trick

薬毒

やくどく

poison in medicine