Hideous1. (a.) Frightful, shocking, or offensive to the eyes; dreadful to behold; as, a hideous monster; hideous looks.
2. (a.) Distressing or offensive to the ear; exciting terror or dismay; as, a hideous noise.
3. (a.) Hateful; shocking.
Thesaurus Entries
abhorrent, abominable, appalling, astounding, atrocious, awe-inspiring, awesome, awful, baneful, beastly, contemptible, damnable, dire, direful, disgusting, dread, dreaded, dreadful, exceptionable, execrable, fell, forbidding, formidable, foul, frightful, ghastly, ghoulish, grim, grisly, grotesque, gruesome, hateful, heinous, horrendous, horrible, horrid, horrific, horrifying, ill-favored, ill-looking, inadmissible, loathsome, lurid, macabre, monstrous, morbid, nasty, nauseating, nauseous, odious, offensive, outrageous, redoubtable, repellent, repelling, repugnant, repulsive, revolting, rotten, schrecklich, shocking, sickening, terrible, terrific, terrifying, tragic, tremendous, ugly, unacceptable, unbeautiful, uncomely, undesirable, unsightly, unspeakable, unwanted, unwelcome, vile