A wandering beyond proper limits; an excursion or sally from the usual way, course, or limit.
The state of being extravagant, wild, or prodigal beyond bounds of propriety or duty; want of moderation; excess; especially, undue expenditure of money; vaid and superfluous expense; prodigality; as, extravagance of anger, love, expression, imagination, demands.
The '20s ended in an era of extravagance, sort of like the one we're in now. There was a big crash, but then the country picked itself up again, and we had some great years. Those were the days when American believed in itself. I was happy and proud to be painting it. Norman Rockwell
I hate the idea of natural. For example, I prefer gardens to wild nature. I like to see the human touch. High heels are a complete invention - an extravagance. They're far from natural, but it's the impracticality that I adore. I prefer the useless to the useful, the sophisticated to the natural. Christian Louboutin