jovial

Synonyms: affable airy amiable animated bantering blithe blithesome bouncy buoyant chaffing cheery chipper chirpy companionable conversable convivial cordial daffy delightful dizzy enjoyable facetious festal festive gay glad gleeful good-natured hilarious humorous jocose jocund jokey jolly jollying joshing jubilant larking lighthearted loony lots of laughs merry mirthful nutty off-the-wall pleasant sociable

Antonyms: sad unhappy