fidget
Concise Oxford English Dictionary © 2008 Oxford University Press:
fidget /ˈfɪdʒɪt/
▶verb (fidgets, fidgeting, fidgeted) make small movements through nervousness or impatience. ▶noun a person who fidgets.
■ (usu. fidgets) mental or physical restlessness.
– derivatives
fidgeter noun,
fidgetiness noun,
fidgety adjective.
fidgeter noun,
fidgetiness noun,
fidgety adjective.
– origin C17: from obs. or dial. fidge ‘to twitch’.
'fidget' also found in these Oxford entries:

