Clam up and Twiddle thumbs

Clam up

Clam up verb - To stop talking.

Twiddle thumbs and clam up are semantically related. In some cases you can use "Twiddle thumbs" instead a verb "Clam up".

Twiddle thumbs

Definitions of Clam up not found.

Clam up and twiddle thumbs are semantically related. Sometimes you can use "Clam up" instead a verb phrase "Twiddle thumbs".

Mutual synonyms

Cite this Source
Twiddle thumbs and Clam up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/clam_up/twiddle_thumbs
Clam up & Twiddle thumbs. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/clam_up/twiddle_thumbs>.
Twiddle thumbs or Clam up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/clam_up/twiddle_thumbs.
Google Ngram Viewer shows how "clam up" and "twiddle thumbs" have occurred on timeline