Merriam-Webster's Collegiate® Dictionary, 11th Edition
WICKED
I. adjective
Etymology: Middle English, alteration of wicke wicked, perhaps from Old English wicca
Date: 13th century
morally very bad ; evil ,
2. fierce , vicious , disposed to or marked by mischief ; roguish ,
3. disgustingly unpleasant ; vile , causing or likely to cause harm, distress, or trouble , going beyond reasonable or predictable limits ; of exceptional quality or degree , wickedly adverb
II. adverb
Date: 1980
very , extremely