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Showing results for twiddle one's thumbs. Search instead for twiddle+one's+thumbs.
Synonyms

twiddle one's thumbs

Idioms  
  1. Be bored or idle, as in There I sat for three hours, twiddling my thumbs, while he made call after call. This expression alludes to the habit of idly turning one's thumbs about one another during a period of inactivity. [Mid-1800s]