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1. The process or condition of worsening or degenerating.
2. Linguistics The process by which the meaning of a word becomes negative or disparaging over a period of time, as silly, from Middle English seely, "blessed, innocent," has come to mean "showing a lack of good sense, frivolous."
[Medieval Latin pēiōrātiō, pēiōrātiōn-, from Late Latin pēiōrātus, past participle of pēiōrāre, to make worse, from Latin pēior, worse; see ped- in Indo-European roots.]
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.
1. (Linguistics) linguistics semantic change whereby a word acquires unfavourable connotations: the English word "silly" changed its meaning from "holy'"or "happy" by pejoration. Compare amelioration3
2. the process of worsening; deterioration
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
depreciation, loss, or diminution in value, quality, etc.See also: Decaying
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
A process by which the meaning of a word changes to something less favorable.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited