Dictionary 1. (a.) Full of mirth or merriment; merry; as, mirthful children.2. (a.) Indicating or inspiring mirth; as, a mirthful face. Thesaurus blithe blithesome buxom festive frivolous gay gleeful hilarious jocular jocund jolly jovial joyful joyous laughter-loving lighthearted merry mirth-loving rejoicing risible |