1) Ecstatic 2) Elated 3) Enraptured 4) Festal 5) Festive 6) French word used in English 7) Gala 8) Gleeful 9) Happy 10) Happy, and then some 11) Jocund 12) Jolly 13) Jovial 14) Joyful 15) Jubilant 16) Like occasions of celebration 17) Marked by happiness 18) Merry 19) Mirthful 20) Rapturous 21) Rhapsodic Found on https://www.crosswordclues.com/clue/joyous
Joy'ous adjective [ Middle English joyous , joious , joios , French joyeux .See Joy .] Glad; gay; merry; joyful; also, affording or inspiring joy; with of before the word or words expressing the cause of joy. « Is this your joyous city?» ... Found on http://www.encyclo.co.uk/webster/J/13