Origin: Latin suffix -ment
Resentment has 2 different meanings across 1 category:
a feeling of deep and bitter anger and ill-will
"After years of being ignored by his partner, Mark's silence was fueled by a quiet but burning resentment that made him want to walk out every time she tried to talk."
Anger or displeasure stemming from belief that one has been wronged or betrayed by others; indignation.
"Sarah's quiet resentment toward her former partner grew after he lied about his finances and made her feel foolish for trusting him."