Twiddling is the act of twisting or turning something in a playful or nervous manner. Some common synonyms for twiddling include fiddling, turning, spinning, rotating, twisting, and twirling. Fiddling refers to the repetitive and often unnecessary manipulation of an object, while turning and spinning both suggest circular or rotational movements. Rotating implies a more deliberate or systematic turning motion, and twisting involves a sharper or more forceful manipulation of an object. Twirling, on the other hand, connotes a more graceful or fanciful action, often associated with dancers or performance artists. Regardless of which word you choose, all of these synonyms convey a sense of playful or idle movement.