log·or·rhe·a (lô?g?-r???, l?g??-)n. Excessive use of words.log?or·rhe?ic adj.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.log?or?rhe?a (?l? g??ri ?, ?l?g ?-) n. 1. pathologically incoherent, repetitious speech. 2. incessant or compulsive talkativeness; wearisome volubility. [1900?05] log`or?rhe?ic, adj. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.logorrhea1. an excessive or abnormal, sometimes incoherent talkativeness. ? logorrheic, adj.See also: Language-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.