chip on shoulder
對待或與他人交往時持有敵意、情緒激動或怨恨
口語·形容懷有敵意或怨恨
英文釋義
to have a grudge or a sense of resentment
例句
He always has a chip on his shoulder about his past failures.
典故來源
源自19世紀(jì)美國習(xí)俗,男孩把木屑放在肩上挑釁別人打掉,以此挑起爭斗,后引申為懷恨在心。