A. Extravagant
B. Rich
C. Miserable
D. Happy
Rich : having a great deal of money or assets, wealthy.
Miserable : wretchedly unhappy or uncomfortable.
Happy : feeling or showing pleasure or contentment.
Extravagant : lacking restraint in spending money or using resources.
Frugal : sparing or economical as regards money or food, thrifty, prudent.
Antonym of Frugal is Extravagant.