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/
"put your money where your mouth is" picture
1.

poner tu dinero donde está tu boca, demostrar con hechos

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.
Si realmente crees en esa startup, entonces pon tu dinero donde está tu boca e invierte en ella.
He always talks about helping the poor, but he never actually puts his money where his mouth is.
Siempre habla de ayudar a los pobres, pero nunca pone su dinero donde está su boca.