The quality or state of holding grudges; a tendency to harbor resentment or ill will.
From 'grudge' plus '-full' (adjective) plus '-ness' (noun suffix creating abstract nouns). Constructed using standard English word-formation patterns.
Psychologists have found that grudgefulness actually predicts poorer health outcomes—people who habitually hold grudges have higher stress hormones, weaker immune systems, and shorter lifespans.
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