Synonyms of hideous

1 Syllable

weird, gross, beast, lou, grim, sick

2 Syllables

grisly, sickie, horrid, yucky, heinous, odious, evil, monstrous, ghastlier, grimmer, ugliest, uglier, morbid, bestial, frightful, lurid, scuzzy, grimmest, porno, dreadful, ghastly, spookish, awful, shocking, yecchy, ugly, nasty, grabber, skanky

3 Syllables

loathsome, gruesome, ghostlike, terrible, offputting, terrifying, bad-looking, obscene, teratoid, appalling, macabre, repugnant, off-putting, horrible, sleazeball, hateful, sickening, horrendous, unsightly, revolting, miscreated, disgusting, repellent, horrific, animal

4 Syllables

detestable, repulsive, unalluring, hard-featured, uncomely, unbeautiful, scatologic, offensive

5 Syllables

unattractive, unprepossessing, abominable