fatigue Definition

fatigue
noun fatigues (plural in senses 4 and 5 only)

1. Tiredness after work or effort, either mental or physical; exhaustion.

Thesaurus: exhaustion, tiredness, weariness, lethargy, listlessness, ennui, languor; Antonym: energy, freshness.
2. physiol.
A decreased power of response to stimulus, resulting from work or effort.
3. Weakness, especially in metals, caused by variations in stress.
4. military.
Fatigue-duty.
5. Uniform worn by soldiers in battle or for domestic tasks.

Form: fatigues

verb

tr & intr
fatigued, fatiguing
1. To exhaust or become exhausted.

Derivative: fatigable
adj

Etymology: 17c: French, from Latin fatigare to weary.