From Longman Dictionary of Contemporary Englishsharp-tonguedˌsharp-ˈtongued adjective [usually before noun] saying things in a disapproving or unfriendly way which often upsets people his sharp-tongued wife
Examples from the Corpus
sharp-tongued• In Kirk Askew, Margarett found a sharp-tongued companion and a compassionate friend.• Gao Yang noticed a frothy string of bloody sputum at the corner of his mouth and felt sorry for the sharp-tongued fellow. 