| calm |
| cancel(verb, stop, prevent, hinder, depress) |
| caution |
| circumvent(verb, stop, hold, control, reduce) |
| cloud(noun, verb, dull, reduce, restrain) |
| constrain(verb, stop, hold, control, reduce) |
| counteract(verb, stop, hold, control, reduce) |
| cut off(verb, phrasal verb) |
| dampen the spirits(expression, idiom) |
| darken(verb, upset, dull, reduce, disturb) |
| debar(verb, stop, check, reject, restrain) |
| debilitate(verb, upset, dull, reduce, disturb) |
| deflate(verb, dishearten, undermine, dispirit) |
| deny(verb, stop, reject, disregard, oppose) |
| derail(verb, prevent, thwart, deter, dissuade) |
| devitalize(verb, upset, dull, reduce, disturb) |
| diminish(verb, dull, reduce) |
| disadvise(verb, stop, check, oppose, restrain) |
| disaffect |
| disapprove of(verb, expression, reject, oppose, dislike) |