Synonyms for Outrageous (same or very similar meaning)
WordNet sense 1 (grossly offensive to decency or morality; causing horror):
hideous, horrid, horrificWordNet sense 2 (unpleasant or disgusting especially to the senses):
offensiveWordNet sense 3 (greatly exceeding bounds of reason or moderation):
exorbitant, extortionate, steep, unconscionable, usuriousWordNet sense 4 (not within reasonable limits):
immoderateFrom the ODE community, based on WordNetadd/edit