| retroflux(noun, drop, decrease, retreat, wane) |
| sagging(adjective, declining, shrinking, lowering, falling) |
| shrinkage(noun, drop, decrease, retreat, wane) |
| shrinking(adjective, declining, lowering, falling, decreasing) |
| shriveling up(expression, adjective, weakening, lessening, declining) |
| sinking(noun, adjective, drop, decrease, retreat) |
| slackening(noun, adjective, drop, decrease, retreat) |
| slowing(adjective, lessening, declining, shrinking, lowering) |
| slumping(adjective, declining, shrinking, lowering, falling) |
| softening(adjective, declining, shrinking, lowering, falling) |
| subsidence(noun, drop, decrease, retreat, wane) |
| subsiding(noun, adjective, ebb, declining, shrinking) |
| sweep(noun, drop, decrease, retreat, wane) |
| wane(noun, verb, stop, drop, pass) |
| waning(noun, adjective, drop, decrease, retreat) |
| wasting(adjective, declining, shrinking, lowering, falling) |
| wasting away(verb, expression, adjective, decline, reoccur) |
| weakening(noun, adjective, drop, decrease, retreat) |
| wearing down(expression, adjective, lessening, declining, shrinking) |
| wearing off(expression, adjective, lessening, declining, shrinking) |