I. verb
to move to and fro
the dog wagged his tail briskly
Synonyms: beat, lash, switch, waggle, wave, woggle
Related Word: shake, twitch, wiggle; oscillate; wigwag
II. noun
1.
a person full of sportive humor
a gay young wag, always full of fun
Synonyms: card, comedian, humorist, joker, zany
Related Word: clown, cutup, madcap, prankster, show-off; jester, kidder, quipster, wisecracker, wit
Idioms: life of the party
2.
Synonyms: zany 2, clown, cutup, farceur, joker, jokester
3.
Synonyms: humorist 2, comedian, comic, droll, funnyman, jester, joker, jokester, quipster, wit