出典:Wiktionary
From jovial + -ly (suffix forming adverbs from adjectives).[1] Jovial is borrowed from French jovial (“jolly, jovial”), from Italian gioviale (“jolly, jovial; (廃れた用法) born under the influence of the planet Jupiter”), from Latin ioviālis (“relating to the Roman god Jupiter”), from Iuppiter, Iovis (“the Roman god Jove または Jupiter, counterpart of the Greek god Zeus”) (from Proto-Indo-European *dyew- (“to be bright; heaven, sky”)) + -ālis (suffix forming adjectives of relationship).[2]
jovially (comparative more jovially, superlative most jovially)