blow the gaff
A British slang idiom often used to describe the act of revealing a secret or exposing hidden information.
Definition
C1General
(informal, British)To reveal a secret or disclose confidential information.
Example
- She accidentally blew the gaff about the surprise party.
- If he blows the gaff, the whole plan will be ruined.
C1Criminal
(informal, British)To expose hidden information, often related to crime or underworld activities.
Example
- The informant blew the gaff on the gang's operations.
- They threatened him not to blow the gaff about their illegal activities.
Similar
Terms that have similar or relatively close meanings to "blow the gaff":
blow someone's coverspill one's gutscome cleantip the gaffblow the whistleblab outbreast one's cardstell onblow offtell alltip one's handspout offblow the roof offblow a gasketdrop a bombshellshoot off at the mouthblow one's wadgob offspout outblow off steamtell the truthlay bareblow one's loadblow outexpose oneselftalk outlet outtalk through one's hatspill outbust outrun off at the mouthpop one's corkblow apartchest one's cardsblow downburst outgive vent to