adjective
extravagant
ik-STRAV-uh-gunt/ɪkˈstrævəɡənt/
Exceeding what is reasonable or necessary.
The extravagant flower arrangement dwarfs the modest dinner table.

Etymology
The original image is wandering outside or beyond a boundary. This developed into exceeding reasonable limits, then specifically spending beyond what prudence allows—the basis of the financial sense.
In context
today a basic funeral costs around five thousand dollars and an extravagant one more than fifty thousand
More examples
- A private chef seems extravagant for a casual family picnic.
- The advertisement makes extravagant claims about the cream's benefits.
- His extravagant praise embarrasses her after such a small favor.
Forms
extravagant · more extravagant · most extravagant
extravagance noun — Excess beyond reasonable or necessary limits.
extravagantly adverb — In a manner exceeding reasonable limits.