Synonyms: grudge, grievance, score
Definition: a resentment strong enough to justify retaliation
Usage: holding a grudge; settling a score
Similar words: gall, rancor, rancour, resentment, bitterness
Definition: a feeling of deep and bitter anger and ill-will
Definition: bear a grudge; harbor ill feelings
Similar words: resent
Definition: feel bitter or indignant about
Usage: She resents being paid less than her co-workers