sit on

sit on idiom
    Also, sit upon.
  1. Confer about or deliberate over, as in Another attorney was called to sit on the case. [Mid-1400s]
  2. Suppress or repress, as in I know they were sitting on some evidence. [Early 1900s]
  3. Postpone action or resolution regarding, as in I don't know why the city council is sitting on their decision. [Early 1900s]
  4. Rebuke sharply, reprimand, as in If he interrupts one more time I'm going to sit on him. [Slang; second half of 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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