means Moving or appearing to move backward, or reverting to an earlier, often worse, state or direction.

from From Latin retrogradus, stitched from retro- 'backward' and gradi 'to step, walk' (the same gradi behind 'progress' and 'gradual'). Astronomers borrowed it for the apparent backward drift of planets across the sky — an optical illusion caused by Earth overtaking them in orbit — and the word kept that double life ever after: literal backward motion and figurative backsliding.