adj. 25B6; adjective
his opulent home : LUXURIOUS, sumptuous, palatial, lavishly appointed, rich, splendid, magnificent, grand, grandiose, fancy; informal plush, swanky; Brit. informal swish; N. Amer. informal swank.
an opulent family : WEALTHY, rich, affluent, well off, well-to-do, moneyed, prosperous, of substance; informal well heeled, rolling in money, loaded, stinking/filthy rich, made of money.
her opulent red hair : COPIOUS, abundant, profuse, prolific, plentiful, luxuriant.
spartan, poor.