The capacity to do work.
The external actions and influences resulting from an entity’s internal nature (ousia) and by which it is made manifest, as opposed to that internal nature itself; the aspect of an entity that can affect the wider world and be apprehended by other beings.
An intangible, modifiable force (often characterized as either 'positive' or 'negative') believed in some New Age religions to emanate from a person, place or thing and which is (or can be) preserved and transferred in human interactions; shared mood or group habit; a vibe, a feeling, an impression. (Compare aura.)
A measure of how many actions a player or unit can take; in the fantasy genre often called magic points or mana.
A quantity that denotes the ability to do work and is measured in a unit dimensioned in mass × distance²/time² (ML²/T²) or the equivalent.
The impetus behind all motion and all activity.
A menial task or tasks, especially in the military.
Weakening and eventual failure of material, typically by cracking leading to complete separation, caused by repeated application of mechanical stress to the material.
A weariness caused by exertion; exhaustion.
To tire or make weary by physical or mental exertion.
To lose so much strength or energy that one becomes tired, weary, feeble or exhausted.
To cause to undergo the process of fatigue.
To wilt a salad by dressing or tossing it.
To undergo the process of fatigue; to fail as a result of fatigue.