/ik strav"euh geuhns/ , n.
1. excessive or unnecessary expenditure or outlay of money.
2. an instance of this: That sports car is an inexcusable extravagance.
3. unrestrained or fantastic excess, as of actions or opinions.
4. an extravagant action, notion, etc.: the extravagances one commits in moments of stress.
[ 1635-45; ]
Syn. 3. lavishness, profusion.
Ant. 1. frugality.