| undermine(verb, support, fix, reduce, destroy) |
| abate |
| break(verb, cause, agree, continue, weaken) |
| deaden(verb, quiet, advance, raise, diminish) |
| decay(noun, verb, raise, extend, deteriorate) |
| decline(noun, verb, advance, reduce, destroy) |
| decrease(noun, verb, increase, reduce, destroy) |
| deplete(increase, extend) |
| depress(verb, order, help, increase, raise) |
| descend(verb, reduce, destroy, halt, slow) |
| deteriorate(raise, rise, improve) |
| diminish(verb, reduce, destroy, halt, rise) |
| disable(help, fix) |
| dissuade(verb, reduce, destroy, halt, slow) |
| fail |
| harm(noun, help, fix, aid) |
| impair(verb, fix, extend, enhance) |
| languish(verb, dull, develop, fail, grow) |
| moderate(upset, rise, extend, intensify) |
| shake(verb, reassure) |