put your money where your mouth is
US /pʊt jʊər ˈmʌn.i wɛr jʊər maʊθ ɪz/
UK /pʊt jʊər ˈmʌn.i wɛr jʊər maʊθ ɪz/

1.
pokazać czynami, przejść od słów do czynów
to prove your claims or intentions by actions, especially by spending money
:
•
If you really believe in that startup, then put your money where your mouth is and invest in it.
Jeśli naprawdę wierzysz w ten startup, to pokaż to czynami i zainwestuj w niego.
•
He always talks about helping the poor, but he never actually puts his money where his mouth is.
Zawsze mówi o pomaganiu biednym, ale nigdy nie pokazuje tego czynami.