| come to nothing(verb, expression, idiom, decline, fail) |
| conquest(noun, break, check, ruin, defeat) |
| creep(noun, verb, move, action, act) |
| crepuscule |
| degeneracy(noun, drop, end, ruin, evil) |
| degenerate(verb, stop, drop, end, cut) |
| demise(noun, verb, break, drop, go) |
| depreciation(noun, drop, decline, decrease, low) |
| die down(verb, expression, calm, drop, control) |
| disintegrate(verb, break, drop, decline, reduce) |
| dismount(verb, settle, slip, collapse, sink) |
| downslope |
| fall for |
| fall from grace(noun, expression, idiom, decline, loss) |
| fall over(verb, expression, phrasal verb, upset, trip) |
| fall to pieces(verb, expression, idiom, yield, surrender) |
| flop |
| give way(verb, expression, phrasal verb, break, drop) |
| go astray(verb, expression, idiom, decline, fail) |
| go to pieces(expression, idiom, break, reduce, slip) |