clammed up[ klam ]SEE DEFINITION OF clammed up
EXAMPLES FROM THE WEB FOR CLAMMED UP
Kellner had clammed up, and when the now suspicious editor had tried to check Colquhoun's tale personally, Colquhoun had vanished.
But he clammed up about that, hoping to keep it a secret until he could go back and claim it.
RELATED WORDS AND SYNONYMS FOR CLAMMED UP
adjectivecalm, motionless, quiet
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.