1. (v.) To destroy confidence or trust in; to cause disbelief in the accuracy of; as, to discredit a source\.

2. (n.) Hence, some degree of dishonor or disesteem; ill repute; reproach; -- applied to persons or things.

3. (v. t.) To refuse credence to; not to accept as true; to disbelieve; as, the report is discredited.

4. (v. t.) To deprive of credibility

5. (v. t.) To deprive of credit or good repute; to bring reproach upon; to make less reputable; to disgrace.

agnosticism asperse aspersion atheism bad character bad name bad odor bad report bad reputation bad repute belie belittle besmirch blacken blemish blot blow sky-high blow up brand bring down bring into discredit bring low bring shame upon bring to naught calumniate cast reproach upon cry down damage debase decry defamation defame deflate defrock degradation degrade demean denial deny deplume deprecate depreciate derogate from destroy detract detract from devaluate devalue diminish disapprobation disapprove of disbelief disbelieve disconfirm disesteem disfavor disgrace dishonor disparage displume disprove dispute disrepute distrust doubt doubtfulness dubiousness evil repute explode expose gag on harm heresy hold in contempt humiliate humiliation ignominy ill fame ill repute ill-favor impute shame to inability to believe incredulity infamy infidelity invalidate knock libel lower make little of malign minimifidianism minimize misbelief misbelieve mistrust mock negate negative nonbelief not admit not believe not buy not swallow nullifidianism obloquy odium opprobrium pillory poor reputation prove the contrary public dishonor puncture put down put to shame qualm question reduce reflect discredit upon reflection refuse to admit refuse to credit refute reject rejection reproach ridicule ruin run down scandal scepticism scruple shady reputation shame shoot show up slander slight slur smear smirch speak ill of stigma stigmatize submit to indignity sully suspicion taint tarnish unbelief unbelieve unbelievingness undercut unfrock unsavory reputation vilify