outrageous (adj.)
c. 1300, "excessive, extravagant," from Old French outrageus, outrajos "immoderate, excessive, violent, lawless" (Modern French outrageux), from outrage, oltrage, from Vulgar Latin *ultraticum "excess," from Latin ultra "beyond" (from suffixed form of PIE root *al- (1) "beyond"). Meaning "flagrantly evil" is late 14c.; modern teen slang usages of it unwittingly approach the original and etymological sense of outrage. Related: Outrageously; outrageousness.