1. (a.) Causing vexation; agitating; afflictive; annoying; as, a vexatious controversy; a vexatious neighbor.

2. (a.) Full or vexation, trouble, or disquiet; disturbed.

aggravating annoying backbreaking besetting bothering bothersome burdensome crushing disturbing exasperating galling grueling harassing heavy hefty importunate importune irking irksome irritating mean onerous oppressive painful pesky pestering pestiferous pestilent pestilential plaguesome plaguey plaguing provoking teasing tiresome tormenting troublesome troubling troublous trying ugly vexing wearisome wicked worrisome worrying