have a big mouth
idiom
informal
: to be likely to reveal personal or confidential information to other people
Be careful of what you say around her—she has a big mouth.
Dictionary Entries Near have a big mouth
Cite this Entry
“Have a big mouth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/have%20a%20big%20mouth. Accessed 21 Dec. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share