splurger

/ˈsplɜrdʒər/
noun
  1. A person who spends money freely or extravagantly, especially on luxuries or treats.
    • My aunt is a real splurger; she always buys the most expensive gifts.
    • He's not usually a splurger, but he went all out for his birthday party.
    • The store loves splurgers who come in and buy several items at once.
Antonyms