Synonyms for Odious:

adj.

bad (adjective)
infamous.
hateful (adjective)
loathsome.
hateful, horrible (adjective)
unpleasant, detestable, vile, repugnant, offensive, disgusting, mean, abhorrent, obnoxious, abominable, repulsive, execrable, repellent, loathsome, foul.
offensive (adjective)
study at offensive, offensive.
painful (adjective)
bothersome, oppressive, crushing, aggravating, burdensome, cutting, miserable, excruciating, acute, painful, uncomfortable, withering, smarting, inflaming, insufferable, arduous, horrendous, grievous, trying, offensive, Besetting, irritating, harrowing, troublesome, anguishing, wrenching, aching, throbbing, unpleasant, unbearable, disagreeable, hurtful, sore, tormenting, Cramping, distressful, cruel, stinging, Irksome, woeful, Torturing., agonizing, biting, severe, stabbing, chafing, bitter, piercing, annoying, Gnawing, grueling.
repulsive (adjective)
repellent.
ugly (adjective)
displeasing, unpleasing, plain, shapeless, homely, disfigured, undesirable, repellent, disagreeable, ugly, unlovely, unaesthetic, inelegant, unappealing, unattractive, hideous, Ill-looking, grotesque, abhorrent, unsightly, repugnant, repulsive, unpleasant.
unclean (adjective)
festering, muddy, toxic, offensive, icky, defiled, fetid, shabby, murky, obscene, dirty, infectious, dingy, unsanitary, insalubrious, disgusting, scruffy, scatological, slovenly, putrid, smutty, septic, mucky, sordid, impure, foul, crummy, filthy, dusty, untidy, grungy, unhygenic, sloppy, grubby, grimy, unclean, squalid.

n.

odious (noun)
abominable, execrable, hateful, detestable.

Other synonyms:

Despisable. despicable, nefarious, contemptible, obnoxious, loathsome, vile, lousy. antipathetic. low. rotten. nasty. detestable
detestable.
vicious
mean.
Other relevant words:
vile, hateful, infamous, detestable, low, despicable, abominable, nefarious, loathsome, obnoxious, antipathetic, Despisable, rotten, execrable, nasty, abhorrent, mean, contemptible, lousy.

Usage examples for odious

  1. Favolle always used to choose for me; and so did that odious Martin, for she had an exquisite taste." – Marriage by Susan Edmonstone Ferrier
  2. It was bad enough when I thought myself forced, through their inconsiderate choice, to decide between an odious imprisonment and the ridicule to which your intervention must expose me! – Historical Romances: Under the Red Robe, Count Hannibal, A Gentleman of France by Stanley J. Weyman
  3. It may be fair to state that Mr. Shaw also considered himself to be possessed of an odious neighbor. – Master Tales of Mystery, Volume 3 by Collected and Arranged by Francis J. Reynolds