Enable is the opposite of impede. Other antonyms could include help, facilitate, assist, aid.
Impede.
delay, hinder, impede.
The opposite of "block" as in impede is to unblock, or allow. The opposite of block (defensive move) is to hit (offensive move).
The opposite of further (to a greater degree) would be lesser. The opposite of further (farther) would be nearer or closer. The opposite of the verb further (aid, assist) would be to hinder, impede, or obstruct.
In the sense that either can impede (be an impediment), they are not opposites, but they are also not generally synonyms.
The act of assisting; help; aid; furtherance; succor; support., An assistant or helper; a body of helpers., Persons present.
Demand and provide are opposite in meaning, in the sense that one is asking for something (requires its provision) and the other is supplying it.
unhelpful, helpless
Do not impede on me please.
You can easily look up 'impede' in a dictionary; everyhome should have a dictionary! Impede means to 'oppose'.
Impede.
While hiking, if you come to a cliff, it will impede your progress.