The Oxford Thesaurus An A-Z Dictionary of Synonyms - jolly adj.

1) merry, cheerful, frolicsome, gay, jovial, joyful, sportive, convivial, jocund, jocose, jocular, frisky, coltish, playful, festive, jubilant, cheery, exuberant, high-spirited, animated: Everyone was in a jolly mood at her birthday party. --v. 2) Often, jolly along. humour, appease, deceive, string along, fool, hoax: They're just jollying him along because they want him to invest in their scheme.