The Oxford Thesaurus An A-Z Dictionary of Synonyms - extravagantadj.

1) wasteful, lavish, profligate, prodigal, improvident, reckless, excessive, spendthrift, profuse, extreme, immoderate: She cannot afford to maintain her extravagant way of life for long. 2) unrestrained, uncontained, wild, outrageous, preposterous, immoderate, ridiculous, foolish, fanciful, unreasonable, absurd, impractical; undeserved, unjustified, unjustifiable: The speaker lavished extravagant praise on the award winners. 3) expensive, costly, extortionate, unreasonable, overpriced, exorbitant, high; dear; Colloq steep: That trip to Istanbul by private jet was extravagant to say the least. 4) gaudy, garish, ostentatious, showy, ornate, flashy, loud, flamboyant; exaggerated, high-sounding: She appears at parties wearing the most extravagant costumes.