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discredit

[dis-kred-it] /dɪsˈkrɛd ɪt/
verb (used with object)
1.
to injure the credit or reputation of; defame:
an effort to discredit honest politicians.
2.
to show to be undeserving of trust or belief; destroy confidence in:
Later research discredited earlier theories.
3.
to give no credence to; disbelieve:
There was good reason to discredit the witness.
noun
4.
loss or lack of belief or confidence; disbelief; distrust:
His theories met with general discredit.
5.
loss or lack of repute or esteem; disrepute.
6.
something that damages a good reputation:
This behavior will be a discredit to your good name.
Origin of discredit
1550-1560
1550-60; dis-1 + credit
Related forms
undiscredited, adjective
Synonyms
1. disparage, disgrace, tarnish, undermine.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for discredit

discredit

/dɪsˈkrɛdɪt/
verb (transitive)
1.
to damage the reputation of
2.
to cause to be disbelieved or distrusted
3.
to reject as untrue or of questionable accuracy
noun
4.
a person, thing, or state of affairs that causes disgrace
5.
damage to a reputation
6.
lack of belief or confidence
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for discredit
v.

1550s, from dis- "opposite of" + credit. Related: Discredited; discrediting; discreditable; discreditably.

Online Etymology Dictionary, © 2010 Douglas Harper
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13
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