| adulterate(verb, decline, reduce, fail, halt) |
| break up(verb, expression, decline, separate, fail) |
| cripple(verb, decline, reduce, fail, halt) |
| debilitate(verb, decline, reduce, fail, halt) |
| devitalize(verb, decline, reduce, fail, halt) |
| enervate(verb, decline, reduce, fail, halt) |
| exhaust(verb, decline, reduce, fail, halt) |
| fail(verb, decline, reduce, halt, lower) |
| faint(verb, decline, reduce, fail, halt) |
| give way(verb, expression, decline, reduce, fail) |
| invalidate(verb, decline, reduce, fail, halt) |
| languish(verb, decline, reduce, fail, halt) |
| limp(verb, decline, reduce, fail, halt) |
| lose(verb, decline, reduce, fail, halt) |
| lose spirit(verb, expression, decline, reduce, fail) |
| relapse(verb, decline, reduce, fail, halt) |
| temper(verb, decline, reduce, fail, halt) |
| totter(verb, decline, reduce, fail, halt) |
| tremble(verb, decline, reduce, fail, halt) |
| undermine(verb, decline, reduce, fail, halt) |