The idiom "sit on something" means to delay or postpone something. It is often used when someone is not taking action on a particular task or decision that needs to be made.
For example, if someone says, "I need you to make a decision on this project," and the other person responds, "I'll have to sit on it for a while," it means that they need more time to think about it before making a decision.
The phrase can also be used to refer to withholding information or keeping a secret. For instance, if someone says, "I know something about that situation, but I'm going to sit on it for now," it means they are not going to reveal the information at that moment.
In summary, "sit on something" means to delay or postpone something, or to withhold information or keep a secret.
• It's important to sit on your anger and not lash out at people. (figurative meaning)
• I have to sit on this secret until my friend tells the truth. (figurative meaning)
• The judge had to sit on the case for weeks before finally coming to a decision. (figurative meaning)
• I can't sit on the chair because it's broken. (literal meaning)
• The company decided to sit on the proposal until they had more information. (figurative meaning)
• You need to stop procrastinating and sit on your application before the deadline passes. (figurative meaning)