为非作歹 Traditional 為非作歹 wéi fēi zuò dǎi 🔊 to break the law and commit crimes (idiom) + Keep this word Meanings wéi fēi zuò dǎi 為非作歹 to break the law and commit crimes (idiom); malefactorevildoerto perpetrate outrages Its characters 为wèibecause ofHSK 3非fēito not be; notHSK 7–9作zuòto do; to engage in歹dǎibad