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clamorous
clamour
clamp
clamp down
clampdown
clamper
clamshell
clamworm
clan
clandestine
clang
clanger
clangor
clanjamfry
clank
clannish
clansman
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clam up
clam up


intransitive verb 
Definition:
 
refuse to talk: to become suddenly secretive or unwilling to talk ( informal )

Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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