| deterioration(drop, back, decrease, slow, retreat) |
| retroversion(back, return, slow, backward, reverse direction) |
| reversal(back, return, slow, backward, reverse direction) |
| reverse(back, return, slow, backward, reverse direction) |
| turnabout(back, return, slow, backward, reverse direction) |
| turnaround(back, return, slow, backward, reverse direction) |
| ebbing(decrease, nonincrease) |
| backflow(noun, drop, decrease, retreat, wane) |
| backwater(noun, regression) |
| ebb tide(expression, idiom) |
| reflection |
| reflex |
| regurgitation(noun, river, regression) |
| anachronism(back, return, slow, backward, reverse direction) |
| annulment(back, slow, backward, reverse direction) |
| backspace(back, return, slow, backward, reverse direction) |
| backwardation(back, slow, backward, reverse direction) |
| bloomer(back, slow, backward, reverse direction) |
| cancellation(back, slow, backward, reverse direction) |
| checkmate(back, slow, backward, reverse direction) |