Jovial :: "Jovial (a.) Gay; merry; joyous; jolly; mirth-inspiring; hilarious; characterized by mirth or jollity; as, a jovial youth; a jovial company; a jovial poem..
Jovialist :: Jovialist (n.) One who lives a jovial life.
Joviality :: Joviality (n.) The quality or state of being jovial.
Jovially :: Jovially (adv.) In a jovial manner; merrily; gayly.