un beautiful (adjective) ugly: unattractive
Sinonime: animal,
appalling,
awful, bad-looking, beastly, deformed, disfigured,
foul, frightful, grisly,
gross,
grotesque, hard-featured,
hideous,
homely,
horrid, ill-favored,
loathsome, misshapen,
monstrous, not much to look at,
plain, repelling,
repugnant,
repulsive,
revolting, unbeautiful, uncomely, uninviting, unlovely, unprepossessing, unseemly, unsightly
Antonime: attractive,
beautiful,
lovely,
pleasing