wag·gish \-gish, -gēsh\adjective Etymology:wag (II) + -ish 1.: resembling or characteristic of a wag : sportively or good-humoredly mischievous or roguish : frolicsome < a company of waggish boys — Roger L'Estrange > < a waggish disposition > 2.: done or made in waggery or for sport : sportive, humorous < a waggish trick > • wag·gish·lyadverb • wag·gish·nessnoun-es