Synonyms for Outrageous:

adj.

beyond reasonable limits (adjective)
barbarous, crazy, excessive, exorbitant, extortionate, extravagant, immoderate, inordinate, offensive, preposterous, steep, unconscionable, unreasonable.
expensive (adjective)
costly, dear, expensive, high-priced, inflated, invaluable, overboard, overpriced, premium, priceless, rich, uneconomical, unreasonable, Oversold, exorbitant, extravagant.
extreme (adjective)
egregious, extreme.
flagrant (adjective)
egregious.
inordinate (adjective)
overindulgent.
insolent (adjective)
arrogant, audacious, bold, brash, brazen, callous, candid, cheeky, contemptuous, defiant, derisive, discourteous, disrespectful, flagrant, impertinent, impolite, insolent, insubordinate, irreverent, outspoken, presumptuous, rude, sacrilegious, sarcastic, saucy, mouthy.
offensive (adjective)
offensive, abandoned, abominable, appalling, atrocious, barbarous, barefaced, contumelious, corrupt, criminal, degenerate, despicable, disgraceful, dishonorable, egregious, execrable, extreme, fantastic, flagitious, glaring, gross, heinous, horrifying, ignoble, infamous, iniquitous, injurious, inordinate, insulting, intemperate, intolerable, monstrous, nefarious, notorious, odious, oppressive, opprobrious, overmuch, rank, reprehensible, scandalous, scurrilous, shameful, shameless, shocking, unconventional, unrestrained, unspeakable, vile, villainous, wanton, wicked.
ridiculous (adjective)
absurd, bizarre, comical, crazy, curious, dubious, eccentric, farcical, foolish, grotesque, incredible, laughable, ludicrous, nonsensical, oddball, outlandish, poppycock, preposterous, ridiculous, silly, weird.
superfluous (adjective)
copious, excessive, exorbitant, extravagant, gratuitous, immoderate, overabundant, overflowing, redundant, superabundant, superfluous, surplus, overindulgent.
unspeakable (adjective)
unspeakable.
very bad (adjective)
abominable, atrocious, brazen, contumelious, corrupt, criminal, degenerate, disgraceful, egregious, flagitious, flagrant, gross, heinous, ignoble, infamous, iniquitous, monstrous, nefarious, notorious, odious, opprobrious, scandalous, scurrilous, shameless, shocking, unspeakable, villainous, violent, wanton, wicked.
violent (adjective)
abusive, assaultive, brawling, broiling, ferocious, fierce, fighting, frenzied, furious, intense, raging, savage, tumultuous, uproarious, vehement, violent, wild.
wicked (adjective)
wicked.

n.

amazing, astonishing, extraordinary, phenomenal, remarkable, sensational, staggering, surprising, unexpected, earth-shattering. atrocious, disgusting, enormous, heinous, indecent, monstrous, right, scandalous, shocking, taboo. obscene, usual. outrageous (noun)
exorbitant, extortionate, hideous, horrid, horrific, immoderate, offensive, steep, unconscionable, usurious.

Other synonyms:

disgraceful, disgusting. extreme, horrifying, opprobrious, scandalous, shameful, shocking. enormous, obscene, taboo. abominable
atrocious.
abusive
insulting.
atrocious
heinous.
corrupt
rank.
shocking
monstrous.
Other relevant words:
abandoned, abominable, amazing, appalling, astonishing, atrocious, barbarous, barefaced, contumelious, corrupt, criminal, degenerate, despicable, disgraceful, disgusting, dishonorable, egregious, enormous, execrable, extortionate, extraordinary, extreme, fantastic, flagitious, glaring, gross, heinous, hideous, horrid, horrific, horrifying, ignoble, indecent, infamous, iniquitous, injurious, inordinate, insulting, intemperate, intolerable, monstrous, nefarious, notorious, obscene, odious, offensive, oppressive, opprobrious, overmuch, phenomenal, rank, remarkable, reprehensible, right, scandalous, scurrilous, sensational, shameful, shameless, shocking, staggering, steep, surprising, taboo, unconscionable, unconventional, unexpected, unrestrained, unspeakable, usual, usurious, vile, villainous, wanton, wicked, earth-shattering.

Usage examples for outrageous

  1. However, Garvington became too outrageous in his demands, and lately Hubert has refused to help him any more. – Red Money by Fergus Hume
  2. But, Jack, this seems to me quite outrageous – The Major by Ralph Connor
  3. In the end Cliffe said some outrageous things, at which Ashe laughed; and Lord Grosville abruptly dissolved the party. – The Marriage of William Ashe by Mrs. Humphry Ward