fes·tal (f?s?t?l)adj. Of, relating to, or of the nature of a feast or festival; festive.[Middle English, from Old French, from Late Latin f?st?lis, from Latin f?stum, feast; see feast.]fes?tal·ly adv.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.festal (?f?st?l) adj another word for festive[C15: from Latin festum holiday, banquet; see feast] ?festally advCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014fes?tal (?f?s tl) adj. pertaining to or befitting a festival, holiday, or gala occasion. [1470?80;