sit on

present singular third person sits on · participle present sitting on · participle past sat on · past sat on · alternative sit upon

1. idiomatictransitiveTo block, suppress, restrain (something).

   The chairman sat on the report until the end of the legislative session.

2. idiomaticinformaltransitiveTo restrain (a person).

   He started to act up, but she sat on him.

3. idiomatictransitiveTo take no action on (something); to hold (something) in reserve without actually using.

   I sent the boss my proposal three weeks ago and he's just been sitting on it.

   1 more example

   I began to call the INS regularly to check up on the status of my application. I got the proverbial "run-around," and this effort only confirmed my suspicion that the INS was sitting on my application.

   1986, Gilberto Gerald, “With My Head Held Up High”, in Joseph Beam, editor, In The Life: A Black Gay Anthology

4. transitiveTo be a member of (something).

   He sits on the appropriations committee.

5. transitiveTo hold an official inquiry regarding (something); to deliberate about (something).
6. euphemistictransitiveTo insert (something) into one's vagina or anus from below.

   Let me sit on it.

7. transitiveUsed other than figuratively or idiomatically: see sit, on.

   The cat sat on the mat.