IPA: /ˈɡrʌdʒər/
KK: /ˈɡrʌdʒər/
A person who continues to feel resentment or anger towards someone for a past offense or wrong.
She is a grudger who never forgives those who have wronged her.
Grudger is formed from "grudge" (from Old French *grucier*, meaning to grumble or complain) and "-er" (meaning a person who). A grudger is a person who holds a grudge or harbors resentment.
Think of someone who 'grumbles' ('grudge') about something and is therefore a person ('-er') who holds onto that feeling.