1. (of an atmosphere or event) friendly, lively, and enjoyable: "a convivial cocktail party"
▪ (of a person) cheerful and friendly; jovial:"she was relaxed and convivial"
Word Originmid 17th century (in the sense ‘fit for a feast, festive’): from Latin convivialis, from convivium ‘a feast’, from con- ‘with’ + vivere ‘live’.