1. the act or habit of spending much more money than is necessary or reasonable
2. something that is expensive and unnecessary
3. excessive or unreasonable behavior or action

Examples

• His extravagance with money eventually led to bankruptcy.
• The wedding was criticized for its extravagance during tough economic times.
• She considered the designer handbag an unnecessary extravagance.
• The extravagance of the palace impressed all the visitors.
• Their extravagance in decorating the house cost them thousands of dollars.
• The CEO’s extravagance with company funds caused a scandal.
• Living within your means requires avoiding financial extravagance.