let out

verbs

express audibly; utter sounds (not necessarily words)
"She let out a big heavy sigh"; "He uttered strange sounds that nobody could understand"
emit, let loose, let out, utter
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"
break, bring out, disclose, discover, divulge, expose, give away, let on, let out, reveal, unwrap
bring out of a specific state
bring out, let out
make (clothes) larger
"Let out that dress--I gained a lot of weight"
let out, widen
antonym
take in