To secretly attack or harm someone, often in an underhanded or treacherous manner; to stab someone in the back.
他总是喜欢在背后放冷箭，让同事们防不胜防
He always likes to stab people in the back, making it hard for his colleagues to guard against him.
Next Idiom
To secretly attack or harm someone, often in an underhanded or treacherous manner; to stab someone in the back.