Synonyms and related words :
aggravating, aggravative, annoying, bothering, bothersome, contentious, disturbing, 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