WordWeb Online

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

Derived forms: ugliest, uglier

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

Antonym: beautiful

Encyclopedia: Ugly