retrograde

moving or directed or tending in a backward direction or contrary to a previous direction

go back over

“retrograde arguments”

move back

“The glacier retrogrades”

get worse or fall back to a previous condition

going from better to worse

move backward in an orbit, of celestial bodies

move in a direction contrary to the usual one

moving from east to west on the celestial sphere; or--for planets--around the sun in a direction opposite to that of the Earth

of amnesia; affecting time immediately preceding trauma