Webster's Revised Unabridged Dictionary · 1913

Extravagance

Extravagance , noun

[Compare French extravagance. See Extravagant, and compare Extravaganza.]

1.
A wandering beyond proper limits; an excursion or sally from the usual way, course, or limit.
2.
The state of being extravagant, wild, or prodigal beyond bounds of propriety or duty; want of moderation; excess; especially, undue expenditure of money; void and superfluous expense; prodigality; as, extravagance of anger, love, expression, imagination, demands.
Some verses of my own, Maximin and Almanzor, cry vengeance on me for their extravagance. — Dryden
The income of three dukes was enough to supply her extravagance. — Arbuthnot