noun
a twisting or fidgeting movement
verb
to twist or fidget with something in a restless or nervous manner
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She absentmindedly began to twiddle with the pen during the meeting.
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He likes to twiddle his thumbs when he's bored.
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Stop twiddling around and get to work!
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The dancer's fingers seemed to twiddle effortlessly as she gracefully moved across the stage.