WordNet sense 1 (full of or showing high-spirited merriment):

jocund, jolly, jovial, mirthful

WordNet sense 2 (offering fun and gaiety):

festal, festive

WordNet sense 3 (full of or characterized by joy):

joyous

WordNet sense 4 (quick and energetic):

brisk, lively, rattling, snappy, spanking, zippy

WordNet sense 5 (possessing or exerting or displaying energy):

energetic