on the DL
on the DL
In a state of secrecy or minimal public knowledge; being known only by a select few people. ("DL" is an initialism for "down low.") Keep this on the DL, but Janet is planning to break up with Kevin next week. My parents know about the pregnancy, but I'd like it to stay on the DL otherwise.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
on the DL
mod. as a secret; secretly; on the QT. (From down low.) She’ll get in trouble because they did it on the DL.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.