impeach
     v 1: challenge the honesty or credibility of; as of witnesses
     2: charge with an offense or misdemeanor; "The public officials
        were impeached"
     3: charge with a crime or misdemeanor
     4: bring an accusation against; level a charge against; "He
        charged the man with spousal abuse" [syn: {accuse}, {incriminate},
         {criminate}]
Source: WordNet® 2.0