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Gloat
Negative Connotation
Using 'gloat' often implies taking pleasure in others' misfortune, which is viewed negatively. 
Schadenfreude
'Gloat' captures the sense of 'Schadenfreude,' a German word for joy at someone else's troubles. 
Not for Sympathy
Avoid 'gloat' when you aim to express sympathy or genuine concern; it's the opposite. 