狂気の沙汰 きょうきのさた Also written 狂気のさた Meanings Expression crazy deed; unbelievable deed; the height of madness; act of sheer madness Kanji 狂 mad. Read as キョウ. 気 spirit 沙 sand 汰 sift. Read as タ. Word lists Colloquial Jinuma: Japanese Dictionary · Word lists