知己知彼 zhījǐzhībǐ to know oneself and know the enemy Origin Definitions Defs Strokes Stroke Words Sentences Sents 知 zhī verb to know to know; to be aware of; to realize or sense己 jǐ pronoun self (bound form) self; oneself; your own body or person知 zhī verb to know to know; to be aware of; to realize or sense彼 bǐ pronoun the other party the other side; the other person; him; her; them