adj. 1. causing annoyance. Syn. -- annoying, galling, chafing, nettlesome, pesky, pestiferous, pestilent, plaguy, plaguey, teasing, vexatious, vexing. [ WordNet 1.5 +PJC ]
2. causing irritation of living tissue; -- used of physical stimuli. Syn. -- irritant, irritative. [ WordNet 1.5 +PJC ]
3. causing pain or physical discomfort; as, an irritating burr under his stocking. Syn. -- painful. [ WordNet 1.5 ]