na-adjective, noun
A formal, literary term for excessive luxury and extravagance, often with a nuance of arrogance or pride. Rare in modern conversation; more common in classical or written contexts.
彼の驕奢な生活はやがて破滅を招いた。
His extravagant lifestyle eventually led to his ruin.
驕奢を戒める言葉が古典に多く見られる。
Many classical texts contain admonitions against luxury and extravagance.
贅沢 is the common, everyday word for luxury or extravagance. 驕奢 is a rare, literary term with a stronger connotation of arrogant excess.
Compound of 驕 (pride, arrogance) and 奢 (extravagance, luxury). The exact historical derivation is uncertain, but the combination conveys arrogant extravagance.