WordNet sense 1 (a compound with which fabrics are treated to repel water):

repellant

WordNet sense 2 (serving or tending to repel):

rebarbative

WordNet sense 3 (disagreeable to the senses, to the mind, or feelings ):

unpleasant

WordNet sense 4 (highly offensive; arousing aversion or disgust):

disgusting, distasteful, foul, loathsome, revolting, wicked, yucky, disgustful, loathly, repelling, skanky, wicked

WordNet sense 5 (unpleasant or disgusting especially to the senses):

offensive

WordNet sense 6 (incapable of absorbing or mixing with):

resistant

WordNet sense 7 (not capable of absorbing or soaking up (liquids)):

nonabsorbent, nonabsorptive