Breadcrumb Home > Thesaurus > F Synonyms of flail Find synonyms for: Noun 1. flail, implement usage: an implement consisting of handle with a free swinging stick at the end; used in manual threshing Verb 1. thrash, thresh, lam, flail, beat, beat up, work over usage: give a thrashing to; beat hard 2. flail, thresh, beat, flap usage: move like a flail; thresh about; "Her arms were flailing" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of flail (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: jerrybuilt Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language