Repellent

Adjective

 * 1) tending or able to repel
 * 2) repulsive, inspiring aversion
 * 3) resistant or impervious to something

Noun

 * 1) someone who repels
 * 2) a substance used to repel insects
 * 3) a substance or treatment for a fabric etc to make it impervious to something

Thesaurus
abhorrent, abominable, base, beastly, below contempt, beneath contempt, complaining, contemptible, crude, despicable, detestable, diamagnetic, disagreeable, disgusting, disputatious, disputing, dissentient, dissenting, distasteful, execrable, fetid, forbidding, foul, fractious, fulsome, gross, hateful, heinous, ignoble, invidious, loathsome, malodorous, mephitic, miasmal, miasmic, nasty, nauseating, nauseous, noisome, noncooperative, noxious, objecting, objectionable, obnoxious, obscene, obstructive, odious, of opposite polarity, offensive, on the barricades, proof against, protesting, rebarbative, rebellious, recalcitrant, refractory, reluctant, renitent, repelling, repugnant, repulsive, resistant, resisting, resistive, retardant, retardative, revolting, revulsive, sickening, stinking, uncongenial, uncooperative, ungenial, unsubmissive, unsympathetic, unyielding, up in arms, vile, withstanding