不意を打つ ふいをうつ Also written 不意を討つ Meanings Expression, Godan verb to take (a person) unawares; to make a surprise attack See also: 不意を突く (ふいをつく). Kanji 不 un-. Read as フ. 意 mind 打 hit. Read as うつ. Jinuma: Japanese Dictionary · Word lists