impede (v.)

c. 1600, back-formation from impediment, or else from Latin impedire "impede, be in the way, hinder, detain," literally "to shackle the feet," from assimilated form of in- "into, in" (from PIE root *en "in") + pes (genitive pedis) "foot," from PIE root *ped- "foot." Related: Impeded; impedes; impeding; impedient.

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