Retrograde describes moving in a backwards or reverse direction. If you're suddenly told that you can no longer vote because you're a woman, that's a retrograde affront to your civil rights. Start protesting!
This word comes from the Latin retrogradus, meaning "going backward." You might hear retrograde used in astronomy to describe the movements of the planets. If a planet like Mercury is in retrograde, that means it appears to be moving backwards. Retrograde can also describe something that's going from better to worse. The farm's retrograde practice of spraying their crops with harsher and harsher pesticides is causing our health to suffer.