Synonyms for Unprepossessing:

• adj.

  •all (adjective)
  • unprepossessing.
  •ugly (adjective)
  • frightful,
  • revolting,
  • gross,
  • unseemly,
  • animal,
  • repugnant,
  • Hard-featured,
  • disfigured,
  • uncomely,
  • beastly,
  • repelling,
  • appalling,
  • bad-looking,
  • unbeautiful,
  • not much to look at,
  • awful,
  • grisly,
  • foul,
  • repulsive,
  • mis-shapen,
  • deformed.
  •unsightly (adjective)
  • disagreeable,
  • lackluster.

• n.

  •
  • unappealing,
  • hideous,
  • monstrous,
  • plain,
  • grim,
  • grotesque.
  •unattractive (noun)
  • unattractive.

• Other synonyms:

  •hazardous
  • unsafe.
  •Other relevant words:
  • dumpy,
  • unsavory,
  • ignoble,
  • loathsome,
  • distorted,
  • sinful,
  • Hard-favored,
  • horrid,
  • ill-made,
  • bad-featured,
  • ubiquitous,
  • evil-looking,
  • gaunt,
  • Evil-favored,
  • undistinguished,
  • atrocious,
  • insignificant,
  • ghastly,
  • thin,
  • mean,
  • unattractiveness,
  • horrible,
  • homely,
  • unlovely,
  • bad,
  • inferior,
  • misproportioned,
  • base-born,
  • sickly,
  • Ill-looking,
  • awkward,
  • ill-favoured,
  • uncouth,
  • uninviting,
  • drear,
  • abominable,
  • simple,
  • Low-born,
  • common,
  • ill-shaped,
  • tasteless,
  • evil,
  • ordinary,
  • low,
  • hateful,
  • lowly,
  • gruesome,
  • misshapen,
  • unlovable,
  • plain-featured,
  • humble,
  • repulsive-looking,
  • wicked,
  • wretched,
  • offensive,
  • ill-proportioned,
  • base,
  • unimposing,
  • plain-looking,
  • dismal,
  • unpretty,
  • plebeian,
  • pale,
  • short,
  • crooked,
  • unpleasing,
  • unimportant,
  • obscure,
  • miserable,
  • unpleasant,
  • ill-favored,
  • nasty,
  • terrible,
  • awful-looking.

Antonyms for Unprepossessing:

• adj.

  • ugly
    attractive, pleasant, good, beautiful, safe, gentle, lovely, pretty, pleasing, delicate, agreeable, nice, kind.
  • unsightly
    sightly.