ugly
ug-ly
adjective
Unpleasant or repulsive to look at; not beautiful or attractive in appearance.
"That old building is really ugly."
Thesaurus
Synonyms: monstrous, hideous, disfigured, off fleek, ugly ass, evil-looking, ill-favoured, unlovely, unsightly, grotesque, ill-favored, fugly
Antonyms: beautiful