- a going beyond reasonable or proper limits in conduct or speech; unreasonable excess
- a spending of more than is reasonable or necessary; excessive expenditure; wastefulness
- an instance of excess in spending, behavior, or speech
Origin of extravaganceFr: see extravagant
- The quality of being extravagant: the extravagance of the furnishings; the extravagance of his rhetoric.
- Immoderate spending: His extravagance led to his financial ruin.
- Something extravagant. See Synonyms at luxury.