let on

verbs

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