Synonyms of terrible

1 Syllable

vile, poor, dire, dread, great, grim

2 Syllables

odious, monstrous, nagging, lurid, spookish, dreadful, awful, knotty, mondo, tragic, greatest, fiercest, lousy, rotten, fiercer, shocking, dudder, grabber, horrid, parlous, painful, ghastlier, frightful, smarting, ghastly, doozie, hellish, whaler, mortal, dreader, grisly, sickie, fearful, serious, dreaded, grimmer, knottier, lousier, grimmest, hideous, beastly

3 Syllables

direful, extreme, loathsome, gruesome, disturbing, teratoid, unpleasant, atrocious, revolting, vehement, horrifying, death-dealing, harrowing, nightmarish, obnoxious, horrible, rubbishy, horrendous, disastrous, jeopardous, terrific, appalling, severe, traumatic, dangerous, hateful, miscreated, hard-shelled, ruffianly, tremendous, abhorrent, fearsome, macabre, petrifying, unnerving

4 Syllables

deplorable, unwelcome, awesome, repulsive, redoubtable, desperate, dangersome, formidable, offensive, memorable, reticular, awe-inspiring, inconvenient

5 Syllables

unfortunate, abominable