| peter out(verb, expression, phrasal verb, drop, take) |
| poop out(verb, expression, phrasal verb, drop, take) |
| prostration(noun, weakness, weariness, tiredness, exhaustion) |
| sink(verb, drop, take, worry, fail) |
| sluggishness(noun, lethargy, slowness, weariness, stupor) |
| toil(trouble, worry, difficulty, lack, torment) |
| vex(verb, bother, worry, fail, strain) |
| wear upon(verb, expression, phrasal verb) |
| disable(verb, take, destroy, weaken, level) |
| fade(verb, decline, annoy, use, depress) |
| faint(noun, weak, fail, strain, annoy) |
| fatigue duty(noun, expression, idiom) |
| get tired(expression, idiom) |
| grind(verb, decline, diminish, decrease, use) |
| heaviness(noun, weariness, tiredness) |
| inanition(noun, weariness, stupor, tiredness, lassitude) |
| indifference(noun, melancholy, dullness, apathy, discontent) |
| knock out(verb, tire) |
| knock up(verb, expression, phrasal verb) |
| moil |