#1 impeach v. challenge the honesty or veracity of; "the lawyers tried to impeach the credibility of the witnesses". wn
#2 impeach v. charge (a public official) with an offense or misdemeanor committed while in office; "The President was impeached". wn
#3 impeach v. [accuse, incriminate, criminate] bring an accusation against; level a charge against; "The neighbors accused the man of spousal abuse". wn
vizzz