From Longman Dictionary of Contemporary Englishsharp tonguesharp tongueTALK TO somebodyif you have a sharp tongue, you often talk in a way that shows you are angry Gina’s sharp tongue will get her into trouble one day. → tongue
Examples from the Corpus
sharp tongue• Only that you have a sharp tongue and an undisciplined sister, neither of which attributes I find endearing.• They opened their mouths to show her sharp tongues and teeth, ready to bite, gobble her up.• She was still slightly in awe of Violette, her worldliness, her sharp tongue.• How I try to punish my parents with my sharp tongue.• If Toyah cuts that easily she'd better watch herself on Linda's sharp tongue.• Nobody but nobody commented on Maggie's shapely form - not unless they wanted acid dripping on them from that sharp tongue.• Oh, she has the sharpest tongue!• The men are white-haired and silent, the women dark-haired with sharp tongues. 