extravagant

Synonyms: absurd bizarre costly crazy exaggerated excessive exorbitant expensive extortionate extreme fanciful fancy fantastic flamboyant flashy foolish garish gaudy grandiose immoderate implausible improvident imprudent inordinate lavish ludicrous nonsensical ornate ostentatious outrageous overpriced preposterous pretentious prodigal profligate reckless ridiculous showy silly spendthrift steep unbalanced unconscionable unreasonable unrestrained

Antonyms: close economical moderate provident reasonable saving stingy thrifty unpretentious