To retard or obstruct the progress of. See Synonyms at hinder1.(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "impede" in a sentence
"All through the social mass run curious veins and streakings separating man from man and woman from woman; mysterious prerogatives and disabilities too ethereal to be distinguished by anything so crude as a title impede and disorder the great business of human intercourse."
"Does the R behind my name impede you from having a true debate?"
"Belle - My comment not a criticism of the writer (you) as regards "impede" - I took it as quote from the "officials" and Best Buy people and it really lit my fire."