"an acrimonious dispute" "bitter about the divorce"
"the bitter truth" "a bitter sorrow"
"an acerbic tone piercing otherwise flowery prose" "a barrage of acid comments" "her acrid remarks make her many enemies" "bitter words" "blistering criticism" "caustic jokes about political assassination, talk-show hosts and medical ethics" "a sulfurous denunciation" "a vitriolic critique"
"shed bitter tears"
"a bitter struggle" "bitter enemies"
"quinine is bitter"
"bitter cold" "a biting wind"
"it was bitterly cold" "bitter cold"