adj. 25B6; adjective
an extravagant lifestyle : SPENDTHRIFT, profligate, unthrifty, improvident, wasteful, prodigal, lavish.
extravagant gifts : EXPENSIVE, costly, dear, high-priced, high-cost; valuable, precious; informal pricey, costing the earth, costing a bomb.
extravagant prices : EXORBITANT, extortionate, excessive, high, unreasonable.
extravagant praise : EXCESSIVE, immoderate, exaggerated, gushing, unrestrained, effusive, fulsome.
decorated in an extravagant style : ORNATE, elaborate, decorated, ornamented, fancy; over-elaborate, ostentatious, exaggerated, baroque, rococo; informal flash, flashy.
thrifty, cheap, plain.