Synonyms of obnoxious

1 Syllable

foul, pill, mean, rank, gross, heel

2 Syllables

bumptious, odious, pushy, dripper, annoying, nerdy, stinking, awful, pushful, rotten, horrid, pesky, nastier, ranker, rankest, hard-time, sickie, pushier, nasty, nastiest, beastly

3 Syllables

loathsome, sickening, unpleasant, ornery, revolting, repellent, nauseating, strong-smelling, bigmouthed, blackhearted, horrible, disgusting, terrible, invidious, off-putting, unvalued, sleazeball, sinister, hateful, hateable, abhorrent, displeasing, loudmouthed, off-color, offputting, repugnant

4 Syllables

detestable, disagreeable, ungraciousness, undesired, unwished-for, unwelcome, repulsive, execrable, unspeakable, pestiferous, disfavored, unaccepted, offensive, detractory, dislikable, distasteful, unlikable, unsavory, unpopular, susceptible

5 Syllables

reprehensible, undescribable, exceptionable, unwelcomeness, unacceptable, abominable, inexpressible, indefinable, undesirable, objectionable, insufferable, unutterable

6 Syllables

inhospitality, inhospitableness, incommunicable