word·less (wûrd?l?s)adj.1. Not expressed in words; unspoken: wordless animosity; wordless joy.2. Inarticulate; silent: wordless spectators.word?less·ly adv.word?less·ness n.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.