Dictionary and Thesaurus

  Definition of Clam up
  1. refuse to talk or stop talking; fall silent; "The children shut up when their father approached"
Similar Words: close up, dummy up, shut up, belt up, button up, be quiet, keep mum

 

 
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low means the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving; a low level or position or degree; "the stock market fell to ... more
 
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