clam upalso shut up like a clam informal
— phrasal verb with clam uk /klæm/ us /klæm/ verb -mm-
Thesaurus: synonyms and related words
(Definition of “clam up” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Get a quick, free translation!
Word of the Day
a short pole with a wide, flat part at one end or both ends, used for moving a small boat or canoe through the water