| forthcoming |
| go out(verb, phrasal verb) |
| lessening(noun, drop, decrease, retreat, wane) |
| low tide(noun, expression, drop, decrease, retreat) |
| low water(noun, expression, drop, decrease, retreat) |
| outcome |
| outgoing |
| outward flow(noun, expression, drop, decrease, retreat) |
| petering out(noun, expression, drop, decrease, retreat) |
| recession(noun, drop, decrease, retreat, wane) |
| refluence(noun, drop, decrease, retreat, wane) |
| reflux(noun, drop, decrease, retreat, wane) |
| regression decline(expression, drop, decrease, retreat, wane) |
| retreat(noun, drop, decrease, wane, departure) |
| retrocession(noun, drop, decrease, retreat, wane) |
| retroflux(noun, drop, decrease, retreat, wane) |
| shrinkage(noun, drop, decrease, retreat, wane) |
| sinking(noun, drop, decrease, retreat, wane) |
| slackening(noun, drop, decrease, retreat, wane) |
| subsidence(noun, drop, decrease, retreat, wane) |