discredit

 
Pronunciation: /dɪsˈkrɛdɪt/

verb (discredits, discrediting, discredited)

[with object]
  • harm the good reputation of: his remarks were taken out of context in an effort to discredit him (as adjective discredited) a discredited government
  • cause (an idea or account) to seem false or unreliable: his explanation for the phenomenon was soon discredited

noun

[mass noun]
  • loss or lack of reputation or respect: they committed crimes which brought discredit upon the administration
  • [count noun] a person or thing that is a source of disgrace: the ships were a discredit to the country

Origin:

mid 16th century: from dis- (expressing reversal) + credit, on the pattern of Italian (di)scredito (noun), (di)screditare (verb), and French discrédit (noun), discréditer (verb)