Luxurious

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Middle English (in the sense ‘lascivious’): from Old French luxurios, from Latin luxuriosus, from luxuria ‘luxury’.

wiktionary

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From Middle English luxurious, from Old French luxurios (modern French luxurieux), from Latin luxuriosus(“rank, luxuriant, profuse, excessive, immoderate”), from luxuria(“rankness, luxury”), from luxus(“extravagance, luxury”).

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luxurious (adj.)

c. 1300, "lascivious, lecherous, unchaste," from Old French luxurios "lustful, lascivious" (Modern French luxurieux), from Latin luxuriosus "immoderate, excessive; voluptuous; profuse," from luxuria "excess, profusion; extravagant living" (see luxury). Meaning "given to luxury, voluptuous" (of persons) is from c. 1600. Of things, "characterized by luxury," from 1640s. Related: Luxuriously; luxuriousness.