blab out

disclose, let on, divulge, expose, give away, let out, reveal, unwrap, discover, bring out, break - make known to the public information that was previously known only to a few people or that was meant to be kept a secret; "The auction house would not disclose the price at which the van Gogh had sold"; "The actress won't reveal how old she is"; "bring out the truth"; "he broke the news to her"; "unwrap the evidence in the murder case"

talk, spill - reveal information; "If you don't oblige me, I'll talk!"; "The former employee spilled all the details"