Impede: (noun) to interfere with or slow the progress of.

This word was located on the back of the page of  (New York City College of Technology : English Department) on paragraph F . The first sentence of Mechanics.

“Mechanics: There are many grammatical and sentence -level error (or patterns of error) that impede understanding.”

While I was waiting for my CST class, I had some time to go over the NYC College of Technology : English Department syllabus .  In the first page , I didn’t have any trouble with the reading, I fully understood the first page. However , when  I turned the page over , I wasn’t having trouble until I stumbled upon this word “Impede” . I tried using context clues  to figured it out by myself and the answer that  came to my mind was “hinder”.  Wasn’t sure about that answer, so I went online to get a precise definition .  Once I learned the definition , and I had a better understanding of the word .