| Pestilent (a.) Tending to cause death or disease; noxious; pernicious; mischievous. Thesaurus Entries aggravative, annoying, bothering, bothersome, contentious, disturbing, exasperating, exasperative, galling, harassing, importunate, importune, irking, irksome, irritating, pesky, pestering, pestiferous, pestilent, pestilential, plaguesome, plaguey, plaguing, provocative, provoking, teasing, tiresome, tormenting, troublesome, troubling, vexatious, vexing, wearisome, worrisome, worrying |