v.
- call into question the integrity or validity of (a practice).
- Brit. charge with treason or another crime against the state.
▸chiefly US charge (the holder of a public office) with misconduct.
Derivative
- impeachable adj.
- impeachment n.
Etymology
ME: from OFr. empecher ‘impede’, from late L. impedicare ‘entangle’ (based on L. pes, ped- ‘foot’).