| deterioration(back, slow, backward, reverse direction) |
| discouragement(back, slow, backward, reverse direction) |
| discouragements(back, slow, backward, reverse direction) |
| frustration(back, slow, backward, reverse direction) |
| frustrations(back, slow, backward, reverse direction) |
| life form(back, slow, backward, reverse direction) |
| living thing(back, slow, backward, reverse direction) |
| organism(back, slow, backward, reverse direction) |
| remainder(back, slow, backward, reverse direction) |
| retrogressive(back, slow, backward, reverse direction) |
| reversion to type(back, slow, backward, reverse direction) |
| rollback(back, return, slow, backward, reverse direction) |
| vestige(back, slow, backward, reverse direction) |
| about-face(noun, change, turn, back, twist) |
| degeneration |
| fixation |
| flip-flop(noun, turn, back, opposite, reversal) |
| inversion(noun, inversion) |
| angle(noun, change, turn, twist, shift) |
| antipode(noun, turn, back, contrary, opposite) |