| floor(verb, drop, slip, dip, descend) |
| flop(verb, drop, slip, dip, plunge) |
| fly off the handle(verb, expression, idiom, yield, collapse) |
| founder(verb, upset, fall, collapse, plunge) |
| freak(scare, become, panic) |
| freeze up(verb, expression, phrasal verb, scare, become) |
| give way(verb, expression, phrasal verb, yield, collapse) |
| go belly up(verb, expression, idiom, phrasal verb, upset) |
| go berserk(verb, expression, yield, collapse, rage) |
| go down(verb, expression, phrasal verb, upset, drop) |
| go downhill(verb, expression, decline, fail, lower) |
| go mad(verb, expression, crack, rage, tear) |
| go off the deep end(verb, expression, idiom, yield, collapse) |
| go to pieces(verb, expression, idiom, break, decline) |
| go to pot(verb, expression, idiom, decline, fail) |
| go to the dogs(verb, expression, idiom, decline, fail) |
| have a fit(verb, expression, idiom, tear, scare) |
| hit the dirt(verb, expression, idiom, upset, drop) |
| hit the skids(verb, expression, idiom, decline, fail) |
| impair(verb, decline, weaken, degenerate, deteriorate) |