| shrivel(verb, quiet, decline, fall, fail) |
| sicken(verb, break, fail, weaken, suffer) |
| sigh(verb, break, fail, weaken, suffer) |
| sink(verb, decline, reduce, fall, fail) |
| slack off(verb, expression, phrasal verb, quiet, decline) |
| snivel(verb, break, fail, weaken, suffer) |
| sorrow(verb, break, fail, weaken, suffer) |
| suffer(verb, break, fail, weaken, deteriorate) |
| taper(verb, quiet, decline, fall, fail) |
| thin(verb, quiet, decline, fall, fail) |
| tire(verb, quiet, decline, fall, fail) |
| tucker(verb, break, fail, weaken, suffer) |
| tucker out(verb, expression, phrasal verb, quiet, decline) |
| vanish(verb, decline, fall, fail, diminish) |
| wane(verb, decline, fall, fail, diminish) |
| waste(verb, break, fail, weaken, suffer) |
| weaken(verb, break, decline, fall, fail) |
| wither(verb, break, decline, fall, fail) |
| yearn(verb, break, fail, weaken, suffer) |
| ail(verb, fail, weaken, suffer, deteriorate) |