From WordNet (r) 3.0 (2006):
wicked
adj 1: morally bad in principle or practice [ant: virtuous]
2: having committed unrighteous acts; "a sinful person" [syn:
sinful, unholy, wicked]
3: intensely or extremely bad or unpleasant in degree or
quality; "severe pain"; "a severe case of flu"; "a terrible
cough"; "under wicked fire from the enemy's guns"; "a wicked
cough" [syn: severe, terrible, wicked]
4: naughtily or annoyingly playful; "teasing and worrying with
impish laughter"; "a wicked prank" [syn: arch, impish,
implike, mischievous, pixilated, prankish, puckish,
wicked]
5: highly offensive; arousing aversion or disgust; "a disgusting
smell"; "distasteful language"; "a loathsome disease"; "the
idea of eating meat is repellent to me"; "revolting food"; "a
wicked stench" [syn: disgusting, disgustful,
distasteful, foul, loathly, loathsome, repellent,
repellant, repelling, revolting, skanky, wicked,
yucky]