Answer: bitterly

AnswerCrossword Clue
BITTERLYHow hot-button issues are contested
BITTERLYWith antagonism
BITTERLYWith resentment
BITTERLYWith rancor
BITTERLYWith acerbity
BITTERLYHow sore losers lose
BITTERLYIn a disagreeable way
bitterlyBITTER, having a disagreeable taste