Pronunciation: (ug'lē),[key] —adj.,-li•er, -li•est. 1. very unattractive or unpleasant to look at; offensive to the sense of beauty; displeasing in appearance.
2. disagreeable; unpleasant; objectionable: ugly tricks; ugly discords. 3. morally revolting: ugly crime. 4. threatening trouble or danger: ugly symptoms. 5. mean; hostile; quarrelsome: an ugly mood; an ugly frame of mind. 6. (esp. of natural phenomena) unpleasant or dangerous: ugly weather; an ugly sea.