luxurious

The story

1. Latin · derived fromlū̆xuriōsus“rank, luxuriant, profuse, excessive, immoderate”
2. Old French · derived fromluxurios
3. Middle English · inherited fromluxurious
4. English todayluxurious

From Middle English luxurious, from Old French luxurios (modern French luxurieux), from Latin lū̆xuriōsus (“rank, luxuriant, profuse, excessive, immoderate”), from lū̆xuria (“rankness, luxury”), from lū̆xus (“extravagance, luxury”). By surface analysis, luxury + -ous.