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1. Public skepticism about the truth of statements, especially official claims and pronouncements: "The credibility gap [is] the result of a deliberate policy of artificial manipulation of official news" (Walter Lippmann).
2. Lack of trustworthiness.
3. A discrepancy or disparity, especially between words and actions.
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.
a disparity between claims or statements made and the evident facts of the situation or circumstances to which they relate
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. a lack of confidence by the public in statements made by politicians, corporations, etc.
2. a perceived discrepancy between statements and actual performance or behavior.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.