wicked
Cross references:
1. bad
wick.ed \'wik-*d\ aj [ME, alter. of wicke wicked] 1: morally bad : EVIL
2a: FIERCE, VICIOUS 2b: causing or likely to cause harm or trouble 2c:
disgustingly unpleasant : VILE {~ odor} 2d: disposed to mischief : ROGUISH
- wick.ed.ly av
Webster's English Dictionary