Clammed up
Twiddle thumbs and clammed up are semantically related. In some cases you can use "Twiddle thumbs" instead a verb "Clammed up".
Twiddle thumbs
Clammed up and twiddle thumbs are semantically related. Sometimes you can use "Clammed up" instead a verb phrase "Twiddle thumbs".
Mutual synonyms
Cite this Source
Twiddle thumbs and Clammed up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/clammed_up/twiddle_thumbs
Clammed up & Twiddle thumbs. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/clammed_up/twiddle_thumbs>.
Twiddle thumbs or Clammed up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/clammed_up/twiddle_thumbs.
Google Ngram Viewer shows how "clammed up" and "twiddle thumbs" have occurred on timeline