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The Collaborative International Dictionary
Convival

Convival \Con*viv"al\, a. [L. convivalis. See Convive.] pertaining to a feast or to festivity; convivial. [Obs.] ``A convival dish.''
--Sir T. Browne.

Douglas Harper's Etymology Dictionary
convival

1640s, from Latin convivalis, from conviva, from convivere (see convivial). Has been replaced in most uses by convivial.

Wiktionary
convival

a. (context obsolete English) Relating to a feast or festivity; convivial.