The Collaborative International Dictionary of English v.0.48:

Festive \Fes"tive\, a. [L. festivus, fr. festum holiday, feast.
   See feast, and cf. Festivous.]
   Pertaining to, or becoming, a feast; festal; joyous; gay;
   mirthful; sportive. -- Fes"tive*ly, adv.
   [1913 Webster]

         The glad circle round them yield their souls
         To festive mirth and wit that knows no gall. --Thomson.
   [1913 Webster]