Emily Dickinson Lexicon

impeach, v. [OFr empechier < L. impedicā-re, catch, entangle.]

1. Hinder the action, progress, or well being of; to blockade; to impede, impair, prevent.
2. Bring charge or accusation against; to accuse of treason; to discredit, disparage, to find fault with, to censure; [fig] faith.