| revert(verb, drop, decline, fall, fail) |
| run to seed(expression, idiom) |
| run to waste(expression, idiom) |
| sag(verb, drop, fall, fail, diminish) |
| settle(verb, drop, fall, fail, diminish) |
| shrink(verb, drop, fall, fail, diminish) |
| shut down |
| skid(verb, decline, weaken, degenerate, deteriorate) |
| slide(verb, drop, decline, fall, fail) |
| sod you(expression, express, curse, swear, emote) |
| stagnate |
| subside(verb, drop, fall, fail, diminish) |
| taint(verb, stain, better, decay, disintegrate) |
| touch bottom |
| tumble |
| turn(verb, stain, better, decay, disintegrate) |
| undermine(verb, decline, weaken, degenerate, deteriorate) |
| up yours(expression, express, curse, swear, emote) |
| vitiate(verb, decline, weaken, degenerate, deteriorate) |
| wane(verb, drop, decline, fall, fail) |