Synonyms for Repulsive (same or very similar meaning)
WordNet sense 1 (offensive to the mind):
abhorrent, detestable, obscene, repugnantWordNet sense 2 (unpleasant or disgusting especially to the senses):
offensiveWordNet sense 3 (so extremely ugly as to be terrifying):
hideousWordNet sense 4 (displeasing to the senses):
uglyFrom the ODE community, based on WordNetadd/edit