noun
desire for vengeance; vengeful thoughts
A strong, often dark desire to get revenge; used in serious or literary contexts.
彼の心は復讐の念で満ちていた。
His heart was filled with a desire for vengeance.
恨み is a broader grudge or resentment, not necessarily focused on revenge.
Compound of 復讐 (revenge) + の (possessive particle) + 念 (thought, feeling).