Princeton's WordNet

1. gay, jocund, jolly, jovial, merry, mirthful(adj)

   full of or showing high-spirited merriment

   "when hearts were young and gay"; "a poet could not but be gay, in such a jocund company"- Wordsworth; "the jolly crowd at the reunion"; "jolly old Saint Nick"; "a jovial old gentleman"; "have a merry Christmas"; "peals of merry laughter"; "a mirthful laugh"

Wiktionary

1. jovial(Adjective)

   Pertaining to Jove or Zeus; Jovian.

2. jovial(Adjective)

   Pertaining to the planet Jupiter; Jovian.

3. jovial(Adjective)

   Under the influence of the planet Jupiter (considered a source of happiness).

4. jovial(Adjective)

   Merry; cheerful and good-humored.

Origin: From jovial, from gioviale, from iovialis, from Iovis, i.e. Jupiter, the planet which was thought by astrologers to bring jollity.

Webster Dictionary

1. Jovial(adj)

   of or pertaining to the god, or the planet, Jupiter

2. Jovial(adj)

   sunny; serene

3. Jovial(adj)

   gay; merry; joyous; jolly; mirth-inspiring; hilarious; characterized by mirth or jollity; as, a jovial youth; a jovial company; a jovial poem

• gemoedelik, joviaal, opgeruimd, vrolikAfrikaans
• مَرِح، باشٌّArabic
• приветливBulgarian
• jovialPortuguese (BR)
• bodrýCzech
• heiterGerman
• jovial; gemytligDanish
• ευδιάθετοςGreek
• alegre, festivoSpanish
• rõõmsameelneEstonian
• خوش خلقFarsi
• joviaaliFinnish
• jovialFrench
• עַלִיזHebrew
• आनन्दितHindi
• veseo, srdačanCroatian
• kedélyesHungarian
• periangIndonesian
• léttur í lundIcelandic
• giovialeItalian
• 愉快なJapanese
• 재미있는Korean
• smagusLithuanian
• jautrs; dzīvespriecīgsLatvian
• riangMalay
• joviaalDutch
• jovial, gemyttligNorwegian
• jowialnyPolish
• خوش خلقPersian
• خوشاله، خوښْ، ساتير، ورين تندىPashto
• jovialPortuguese
• jo­vialRomanian
• весёлыйRussian
• veselýSlovak
• vederSlovenian
• veseoSerbian
• jovialiskSwedish
• เบิกบานใจ; ร่าเริง; สนุกสนานThai
• neşeli, güler yüzlüTurkish
• 愉快的Chinese (Trad.)
• веселийUkrainian
• خوش و خرمUrdu
• vui tínhVietnamese
• 快活的，愉快的Chinese (Simp.)