無駄遣い
むだづかい · mudadukai · JLPT N1 · noun
waste money on
💸 muda = waste, dukai = use: wasting money through use
無駄 (muda) means waste or futility; 遣い (zukai) means spending or use. Money spent to no good purpose is 無駄遣い, so reach for the leak of cash rather than a wish.