chip on your shoulder
Chip on your shoulder (phrase) means a lasting resentment or sense of grievance that makes someone quick to take offence, argue or feel looked down on. Example: “He has a chip on his shoulder about not going to university.”
How to use chip on your shoulder
Learner’s notesIn plain EnglishBeing touchy and resentful because you feel you have been treated unfairly.
Informal. Calling someone out for it is confrontational.
The possessive changes with the person: a chip on his shoulder, a chip on their shoulder. Keep it singular — never chips on your shoulders.
Trace the full origin ↓Etymology
From an American practice of placing a wood chip on one's shoulder and daring another person to knock it off as a challenge to fight; the phrase is recorded in this literal sense before becoming figurative.