put one's money where one's mouth is
To take an obvious stake in the truth of a claim that one is making.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“If you really believe in this project, put your money where your mouth is.”
“He claims the new software is superior, so I told him to put his money where his mouth is and invest in it.”
“The politician frequently criticized the current funding model, but when challenged to put his money where his mouth is, he failed to offer a viable alternative.”
- 01
abound in one's own sense
To follow one’s own inclinations and opinions.
- 02
ace up one's sleeve
A surprise advantage of which others are not aware.
- 03
act one's age
To behave in a manner appropriate to one's age.
- 04
act one's age, not one's shoe size
Synonym of act one's age (“to behave in a mature manner; to avoid being childish”).
- 05
afraid of one's own shadow
Exceptionally timid.
- 06
air one's dirty laundry in public
To reveal one's sordid secrets to the public.
- 07
air one's dirty linen in public
Synonym of air one's dirty laundry in public.
- 08
albatross around one's neck
A characteristic, possession, associate, or previous deed that hinders one's ability to succeed.
Last updated August 10, 2026