- take the lid off
- take the lid off (of) something & take the lid off†1. Lit. to remove the lid from something. (
Of
is usually retained before pronouns.) •I took the lid off the box and set it aside.
•Karen took off the lid.
2. Fig. to reveal a set of previously concealed problems. (Of
is usually retained before pronouns.) •You took the lid off this mess. You straighten it out!
•You took off the lid, so you have to settle it.
* * *{v. phr.} 1. To let out in the open; divulge. * /It's about time to take the lid off the question of how many prisoners of war are still in enemy hands./ 2. To start to face an issue. * /"The best way to deal with your divorce," the doctor said to Fran, "is to take the lid off of it."/ Compare: BLOW THE LID OFF, LET THE CAT OUT OF THE BAG.
Dictionary of American idioms. 2013.