1. In an insane manner
   "he behaves crazily when he is off his medication"
   - insanely, dementedly, madly

See also: crazy

• unchaste
• unchastened
• uncheckable
• unchecked
• uncheerful
• uncheerfulness
• unchewable
• unchivalrous
• unchivalrously
• unchristian
• unchristianly
• unchristlike
• unchurch
• uncial
• unciform bone
• uncinate
• uncircumcised
• uncivil
• uncivilised
• uncivilized
• uncivilly
• unclad
• unclaimed
• unclasp
• unclassifiable