The state of being embittered; a feeling of deep resentment, anger, or disappointment that has built up over time.
From 'embitter' with the suffix '-ment,' which creates abstract nouns from verbs to indicate the result, state, or act of the verb. This shows how English builds emotional vocabulary by converting verbs to nouns.
Embitterment is what happens when disappointment isn't processed or healed—it calcifies into something harder and more permanent. Psychologists now understand that holding onto grievances literally changes your brain chemistry, making the embitterment self-perpetuating.
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