resentment

1. Origins, structure, and basic meaning

• Structure: 恨 has 9 strokes, and its kun-readings include うらむ. 恨む (うらむ) means to resent, while 恨み (うらみ) means resentment.
• Basic usage: 恨む describes resenting a person or blaming bad luck; 恨み names the grudge someone holds or lets go of.

2. Common pitfalls and similar expressions

• Resenting something and holding a grudge
  • 約束を破った友人を長く恨んでいた means resented a friend for a long time after the friend broke a promise. 不運を恨む means to blame bad luck.
  • 昔の恨みを捨てて means after letting go of an old grudge. 恨みを抱えたままでは refers to remaining burdened with resentment.