Synonyms and related words :
aggravating, annoying, backbreaking, besetting, boresome, boring, bothering, bothersome, burdensome, chafing, crushing, disturbing, drudging, dull, exasperating, exhausting, fagging, fatiguing, galling, grueling, harassing, heavy, hefty, importunate, importune, irking, irritating, nettling, onerous, oppressive, painful, pesky, pestering, pestiferous, pestilent, pestilential, plaguesome, plaguey, plaguing, provoking, stupefyingly boring, stupid, stuporific, teasing, tedious, tiresome, tiring, tormenting, troublesome, troubling, trying, uninteresting, vexatious, vexing, weariful, wearing, wearisome, wearying, worrisome, worrying, yawny