noun
wasteful person; spendthrift
Refers to a person who habitually wastes money or resources. Often used critically.
彼は浪費家で、給料のほとんどを無駄遣いしてしまう。
He is a spendthrift and ends up wasting most of his salary.
浪費家の夫に家計を任せられない。
I can't leave the household finances to my wasteful husband.
Refers to the act of wasting money, not the person.
Compound of 浪費 (waste) + 家 (person with a certain trait).