gastar
/ɡasˈtaɾ/ · A2 · verb
to spend
💸 gastar: you waste (gast-) money like gas in a tank until it is gone
Gastar comes from Latin vastare, to lay waste, the same root as English waste and devastate. Spending, wearing out and using up are all ways of laying waste to a supply: money, shoe soles, energy or water.