| narrow down(expression, drop, decline, reduce) |
| quell(verb, drop, quiet, decline) |
| quiet(verb, drop, decline, reduce) |
| reduce(verb, drop, decline, ease) |
| restrain(verb, drop, quiet, decline) |
| run low(expression, drop, decline, reduce) |
| settle(verb, drop, quiet, decline) |
| shrink(verb, drop, decline, reduce) |
| slack off(expression, drop, decline, reduce) |
| slacken(verb, drop, quiet, decline) |
| slash(verb, drop, quiet, decline) |
| slump(verb, drop, quiet, decline) |
| soften(verb, drop, quiet, decline) |
| subside(verb, drop, decline, reduce) |
| tail off(expression, drop, decline, reduce) |
| wear down(expression, drop, decline, reduce) |
| fall(verb, decline, reduce, fail) |