Englishopulence
noun
1 he was taken aback by the sheer opulence of the room:
luxuriousness, sumptuousness, lavishness, richness, lushness, luxury, luxuriance, splendour, magnificence, grandeur, splendidness, grandiosity, costliness, fanciness;
informal plushness, plushiness, ritziness, swankiness, poshness, classiness.
▷antonyms restraint, simplicity.
opulence Oxford Dictionary of English