impede (v.)youdaoicibaDictYouDict[impede 词源字典]
c. 1600, back-formation from impediment, or else from Latin impedire "impede, be in the way, hinder, detain," literally "to shackle the feet" (see impediment). Related: Impeded; impedes; impeding.[impede etymology, impede origin, 英语词源]