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sit on

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verb (intr, preposition)
to be a member of (a committee, etc)
informal to suppress
informal to check or rebuke
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with sit on

sit on

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® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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