shut up like a clam
English
Verb
shut up like a clam (third-person singular simple present shuts up like a clam, present participle shutting up like a clam, simple past and past participle shut up like a clam)
- Synonym of clam up.
shut up like a clam (third-person singular simple present shuts up like a clam, present participle shutting up like a clam, simple past and past participle shut up like a clam)