verb (used with object)

to injure the credit or reputation of; defame: an effort to discredit honest politicians.
to show to be undeserving of trust or belief; destroy confidence in: Later research discredited earlier theories.
to give no credence to; disbelieve: There was good reason to discredit the witness.


loss or lack of belief or confidence; disbelief; distrust: His theories met with general discredit.
loss or lack of repute or esteem; disrepute.
something that damages a good reputation: This behavior will be a discredit to your good name.

Nearby words

  1. discovery day,
  2. discovery inlet,
  3. discovery method,
  4. discovery procedure,
  5. discreate,
  6. discreditable,
  7. discreet,
  8. discreetly,
  9. discrepancy,
  10. discrepant

Origin of discredit

First recorded in 1550–60; dis-1 + credit

Related formsun·dis·cred·it·ed, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for discredit

British Dictionary definitions for discredit


verb (tr)

to damage the reputation of
to cause to be disbelieved or distrusted
to reject as untrue or of questionable accuracy


a person, thing, or state of affairs that causes disgrace
damage to a reputation
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

Word Origin and History for discredit



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

Online Etymology Dictionary, © 2010 Douglas Harper