blow the gaff in English
verb
divulge a secret, reveal a secret; tell the truth, expose the truth of the matter; reveal the truth accidentally
Use "blow the gaff" in a sentence
Below are sample sentences containing the word "blow the gaff" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "blow the gaff", or refer to the context using the word "blow the gaff" in the English Dictionary.
1. He's a good bloke - he wouldn't blow the gaff on us.
2. Don't blow the gaff on us about putting the rat in his desk.
3. They killed Green because he was about to blow the gaff on their drug dealing.