let something drop

let something drop (or fall)

casually reveal a piece of information.
See also: drop, let, something

let something ˈdrop

1 do or say nothing more about somebody/something: I’ve heard enough about this subject. Can we let it drop now?
2 mention somebody/something in a conversation, by accident or as if by accident: He let it drop that the Prime Minister was a close friend of his.
See also: drop, let, something
References in periodicals archive ?
Social networks connect people to each other and to topics of interest, and you can't count on an angry mob to just let something drop. Misdirection--changing the topic of conversation to something that makes you look better--doesn't work for similar reasons.