n. 25B6; verb
the dog's tail wagged frantically : SWING, swish, switch, sway, shake, quiver, twitch, whip; informal waggle.
he wagged his stick at them : SHAKE, wave, wiggle, flourish, brandish.
25B6; noun
a feeble wag of her tail : SWING, shake, swish, switch, quiver, twitch, whip; informal waggle.
a wag of the finger : SHAKE, flourish, wiggle, wobble, wave; informal waggle.