Convivial

Adjective

 * 1) Of or relating to a feast or entertainment, or to eating and drinking, with accompanying festivity; festive; social; gay; jovial.

Adverbs for Convivial
warmly; extremely; hospitably; sociably; fraternally; cosily; gregariously; entertainly; chattingly; hilariously; waggishly; uproariously; pleasantly; merrily; gaily; blithely; affably; highly; agreeably; sportively; facetiously; boisterously; noisily; obstreperously; jovially; lovingly; festively;

Synonyms for Convivial
festive, hospitable, gay, jolly, merry, cordial, sociable, jovial.

Antonyms for Convivial
dismal, solemn, staid, severe.

Thesaurus
boon, companionable, festal, festive, free and easy, gala, gay, gladsome, hail-fellow-well-met, hearty, hilarious, jocund, jolly, jovial, joyful, joyous, lively, merry, merrymaking, on the loose, sociable, vivacious

Etymology
From convīvium (a feast)

Adjective

 * 1) convivial
 * 2) user-friendly