WordWeb Online

1. Displeasing to the senses
   "an ugly face"; "ugly furniture"
    
2. Inclined to anger or bad feelings with overtones of menace
   "an ugly frame of mind"
   - surly
    
3. Morally reprehensible
   "ugly crimes"
   - despicable, vile, slimy, unworthy, worthless, wretched
    
4. Provoking horror
   "an ugly wound"
   - atrocious, frightful, horrifying, horrible

Derived forms: ugliest, uglier

See also: alarming, awkward, beauty, disfigured, displeasing, evil, evil-looking, fugly, grotesque, hideous, ill-favored [US], ill-favoured [Brit, Cdn], ill-natured, monstrous, repulsive, scrofulous, ugliness, unattractive, unlovely, unpicturesque, unsightly

Antonym: beautiful

Encyclopedia: Ugly Ugly, Dirty and Bad