Something very ugly and offensive.

Roget 846: ugliness etc. adj.; deformity, inelegance; acomia^†; disfigurement etc. (blemish) 848; want of symmetry, inconcinnity^†; distortion etc. 243; squalor etc. (uncleanness) 653.    forbidding countenance, vinegar aspect, hanging look, wry face, spretae injuria formae" [Vergil]. [person who is ugly] eyesore, object, witch, hag, figure, sight, fright; monster; dog [Coll.], woofer [Coll.], pig [Coll.]; octopus, specter, scarecrow, harridan^†, satyr^†, toad, monkey, baboon, Caliban, Aesop^†, monstrum horrendum informe ingens cui lumen monstrum horrendum informe ingens cui lumen ademptum [Lat.] [Vergil]. ... show more

Roget 848: blemish, disfigurement, deformity; adactylism^†; flaw, defect etc. (imperfection) 651; injury etc. (deterioration) 659; spots on the sun^†; eyesore.    stain, blot; spot, spottiness; speck, speckle, blur.    tarnish, smudge; dirt etc. 653.    [blemish on a person's skin: list] freckle, mole, macula [Anat.], patch, blotch, birthmark; blobber lip^†, blubber lip; blain^†, maculation; scar, wem^†; pustule; whelk; excrescence, pimple etc. (protuberance) 250.    ... show more

Dutch: doorn
Polish: szkarada