obstinate and unruly;stubborn (/wild) and intractable ❍ 监狱里选定这个人，认为他是个～的人物，……(杨植霖《王若飞在狱中》71) The prison officials picked him up for his in tractable and untamed nature.
桀骜不驯jie ao bu xun
stubborn and intractable
桀骜不驯jié ào bù xùn
桀骜：性情倔强、暴烈；驯：驯服。形容脾气暴烈、很难驯服。stubborn and intractable, obstinate and unruly, arrogant and unyielding