Breadcrumb Home > Thesaurus > F Synonyms of fortnight Find synonyms for: Noun 1. fortnight, two weeks, time period, period of time, period usage: a period of fourteen consecutive days; "most major tennis tournaments last a fortnight" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of fortnight (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language