Etymology
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impeachment (n.)
late 14c., enpechement "accusation, charge," from Old French empeechement "difficulty, hindrance; (legal) impeachment," from empeechier "to hinder, impede" (see impeach). As a judicial proceeding on charges of maladministration against a public official, from 1640s.
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impeachable (adj.)

early 15c., empechable, "liable to impeachment," from Old French; see impeach + -able. Related: impeachably; impeachability.

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