Outrageous

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late Middle English: from Old French outrageus, from outrage ‘excess’ (see outrage).

wiktionary

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From Anglo-Norman outrageus, Middle French outrageus, from outrage; equivalent to outrage +‎ -ous.

etymonline

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outrageous (adj.)

c. 1300, "excessive, extravagant, exorbitant, immoderate," 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- "beyond"). Meaning "flagrantly evil, atrocious" is late 14c.; modern teen slang usages of it unwittingly approach the original and etymological sense of outrage. Related: Outrageously; outrageousness.