wicked in WordNet English dictionary

1. naughtily or annoyingly playful
   "teasing and worrying with impish laughter"; "a wicked prank"
   arch  impish  implike  mischievous  pixilated  prankish  puckish  wicked 
   
2. 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"
   disgusting  disgustful  distasteful  foul  loathly  loathsome  repellent  repellant  repelling  revolting  skanky  wicked  yucky 
   
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"
   severe  terrible  wicked 
   
4. having committed unrighteous acts
   "a sinful person"
   sinful  unholy  wicked 
   
5. morally bad in principle or practice
   wicked