retrograde in WordNet English dictionary

1. go back over
   "retrograde arguments"
   retrograde  rehash  hash over 
   
2. get worse or fall back to a previous condition
   regress  retrograde  retrogress 
   
3. move back
   "The glacier retrogrades"
   retrograde  retreat 
   
4. move in a direction contrary to the usual one
   "retrograding planets"
   retrograde 
   
5. move backward in an orbit, of celestial bodies
   retrograde 
   

1. moving or directed or tending in a backward direction or contrary to a previous direction
   retral  retrograde 
   
2. of amnesia; affecting time immediately preceding trauma
   retrograde 
   
3. moving from east to west on the celestial sphere; or--for planets--around the sun in a direction opposite to that of the Earth
   retrograde 
   
4. going from better to worse
   retrograde  retrogressive