put your money where your mouth is
成語所屬單字money
put your money where your mouth is — 慣用語
1. To support one's opinions or promises by taking actual action or spending money,
1.慣用語
釋義
說做就做；用行動支持
To support one's opinions or promises by taking actual action or spending money, rather than just talking.
例句
If you believe the charity does good work, put your money where your mouth is and donate something.
Darius kept saying he could build a better website, so I told him to put his money where his mouth is.