tweed·y (tw??d?)adj. tweed·i·er, tweed·i·est 1. Made of tweed.2. Wearing tweeds.3. Informal Suggestive of casual, informal taste, habits, and lifestyle: “He’s rumpled and tweedy … if he were preparing to drink a martini, he might casually stir it with his finger” (Phil McCombs).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.tweedy (?twi?d?) adj, tweedier or tweediest1. (Clothing & Fashion) of, made of, or resembling tweed2. showing a fondness for a hearty outdoor life, usually associated with wearers of tweeds ?tweediness nCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014tweed?y (?twi di) adj. tweed?i?er, tweed?i?est. 1. made of or resembling tweed, as in texture or appearance. 2. wearing tweeds, esp. as a mark of a casual or outdoor life. [1910?15] tweed?i?ness, n. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.