Synonyms and Antonyms of clam up
to stop talking <the little girl clammed up when the doctor came into the room> Synonyms belt up [British], shut up, dry up, dummy up, hush, pipe down, quiet (down)Related Words calm (down), cool (down), settle (down); haw, hemNear Antonyms pipe up, sound off, speak out, speak up, spout (off), talk upAntonyms speak, talk
Seen and Heard
What made you want to look up clam up? Please tell us where you read or heard it (including the quote, if possible).