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View synonyms for clam up
clam up
verb
- informal.intr, adverb to keep or become silent or withhold information
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Idioms and Phrases
Refuse to talk or respond, as in Whenever she asks her teenager about his activities, he clams up . This term alludes to the tightly closed valves of a live clam. [ Slang ; early 1900s]Advertisement
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from 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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