(a.) Pertaining to a fest; festive; festal; appropriate to a festival; joyous; mirthful.

Mardi Gras Saturnalia anniversary banquet birthday blowout carnival celebration commemoration do entertainment fair feast festive occasion festivity fete field day fiesta gala gala affair gala day great doings high jinks holiday holy day jamboree kermis party picnic red-letter day waygoose wayzgoose