depletion

As a verb fatigue

is .

As an adjective fatigue

is tired.

As a noun depletion is

depletion.

As a noun depletion

is depletion.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between depletion and devastation

is that depletion is depletion while devastation is devastation, destruction.

As nouns the difference between depletion and extinction

is that depletion is depletion while extinction is the action of making or becoming extinct; annihilation.

As a noun depletion

is depletion.

As a verb reduce is

to bring down the size, quantity, quality, value or intensity of something; to diminish, to lower, to impair.

As nouns the difference between drop and depletion

is that drop is a small mass of liquid just large enough to hold its own weight via surface tension, usually one that falls from a source of liquid while depletion is depletion.

As a verb drop

is to fall in droplets (of a liquid).

As nouns the difference between depreciation and depletion

is that depreciation is depreciation while depletion is depletion.

As nouns the difference between impairment and depletion

is that impairment is the result of being impaired; a deterioration or weakening; a disability or handicap; an inefficient part or factor while depletion is depletion.

As nouns the difference between depletion and attrition

is that depletion is the act of depleting, or the state of being depleted; exhaustion while attrition is wearing or grinding down by friction.

As a verb depletes

is third-person singular of deplete.

As a noun depletion is

the act of depleting, or the state of being depleted; exhaustion.