wick·ed
   
adj. wick·ed·er, wick·ed·est

1. Evil by nature and in practice: “this wicked man Hitler, the repository and embodiment of many forms of soul-destroying hatred” (Winston S. Churchill).
2. Playfully malicious or mischievous: a wicked prank; a critic's wicked wit.
3. Severe and distressing: a wicked cough; a wicked gash; wicked driving conditions.
4. Highly offensive; obnoxious: a wicked stench.
5. Slang Strikingly good, effective, or skillful: a wicked curve ball; a wicked imitation.

adv. Slang

Used as an intensive: “a... body suit, which she describes as wicked comfortable” (Nathan Cobb).

[Middle English, alteration of wicke, ultimately from Old English wicca, sorcerer. See witch.]