if you say that someone is sitting on something, you mean that they are delaying dealing with it(He had been sitting on the document for at least two months.collinsdictionary.com); to hold something back from being considered or acted on(collinsdictionary.com); to delay dealing with(something • I sent my application about six weeks ago and they’ve just been sitting on it.ldoceonline.com); fail to deal with(something • She sat on the article until a deadline galvanized her into putting words to paperlexico.com • There is now enormous choice in the current account market, so there is no excuse to sit on an account which is not offering the best deal. • The company is regarded as more financially capable than its rival of doing such a deal, but appears happy to sit on its holding. • I've been sitting on this story for a week or so, trying to figure out what to do with it. • Lucas has been sitting on this basic story idea for well on thirty years now, so how far wrong could he go? • I finally decided to stop sitting on things and threw out my war-torn couch today.)
subdue(someone, typically by saying something intended to make them uneasy or embarrassed • Someone should have sat on him when he was younglexico.com • He bears the imprint of whoever sits on him and the Vice-President really sat on him. • My middle son lives with his dad and is 20, but he doesn't give me the time of day, but my youngest is 5 (going on 20) and I have really sat on him hard.); to check or rebuke(I'll sit on him if he tries to interrupt me.collinsdictionary.com); to force someone to be silent or not to do something(The boss is going to sit on him to make sure he says nothing.cambridge.org)
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