move to and fro; "The shy student lingered in the corner"
be undecided about something; waver between conflicting positions or courses of action; "He oscillates between accepting the new position and retirement"
merriment expressed by a brightness or gleam or animation of countenance; "he had a sparkle in his eye"; "there's a perpetual twinkle in his eyes"
be lively or brilliant or exhibit virtuosity; "The musical performance sparkled"; "A scintillating conversation"; "his playing coruscated throughout the concert hall"
reflect brightly; "Unquarried marble sparkled on the hillside"