From Proto-Italic *luksos, from Proto-Indo-European *lug-so-s, from Proto-Indo-European *lewg- (“bend, twist”), whence also luctor (“wrestle”). Cognate with Sanskrit रुग्ण (rugṇá, “bent, broken”), Ancient Greek λύγος (lúgos, “twig, withe”), Lithuanian lugnas, Old Norse lykna (“to bend, close”).
Oefen met het spreken en memoriseren van " luxus " en vele andere woorden en zinnen in Latijn .