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.

verb

commend , credit , honor , praise , believe , trust

verb

blow up * , bring into disrepute , bring to naught , censure , defame , degrade , destroy , disconsider , disesteem , disfavor , disgrace , dishonor , disparage , disprove , explode , expose , frown upon , knock bottom out of , mudsling , poke full of holes , pooh-pooh * , puncture , put down , reflect on , reproach , ruin , run down , shoot , show up , slander , slur , smear , take rug out from under , tear down * , vilify , challenge , deny , disbelieve , discount , dispute , distrust , mistrust , put under suspicion , reject , scoff at , shame , debunk , deflate , belie , confute , rebut , asperse , belittle , blame , blemish , damage , decry , doubt , ignominy , impeach , question , suspect , taint

noun

bad name , bad odor , dishonor , disrepute , humiliation , ignominy , ill repute , obloquy , odium , opprobrium , shame , incredulity , incredulousness , unbelief