taint - definition and synonyms

verb [transitive] 

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present tense
present participletainting
past tensetainted
past participletainted
  1. to give something an unpleasant quality that spoils it and often makes people not want it, or not want to be involved with it

    The air was tainted by the smell of burning.

    1. a.
      to make someone seem less honest, morally pure etc

      a lot of damaging publicity that could taint the jury