extravagance

(noun) the quality of exceeding the appropriate limits of decorum or probability or truth. Synonyms: extravagancy. Example: "We were surprised by the extravagance of his description."

(noun) the trait of spending extravagantly. Synonyms: prodigality, profligacy.

(noun) excessive spending. Synonyms: prodigality, lavishness, highlife, high life.