lethargy

As nouns the difference between inertness and lethargy

is that inertness is want of activity or exertion; habitual indisposition to action or motion; sluggishness; apathy; insensibility while lethargy is (pathology) a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns.

As a noun lethargy

is (pathology) a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between lethargy and perseverance

is that lethargy is a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns while perseverance is continuing in a course of action without regard to discouragement, opposition or previous failure.

As a verb syncope

is .

As a noun lethargy is

(pathology) a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns.

Lethargy is a synonym of dullness.

As nouns the difference between lethargy and dullness

is that lethargy is (pathology) a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns while dullness is the quality of being slow to understand things.

As a verb tired

is (tire).

As an adjective tired

is in need of some rest or sleep.

As a noun lethargy is

(pathology) a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns.

As a noun lethargy

is a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns.

As an adjective idle is

empty, vacant.

As a verb idle is

to spend in idleness; to waste; to consume.

As nouns the difference between vast and lethargy

is that vast is a vast space while lethargy is a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns.

As an adjective vast

is very large or wide (literally or figuratively).

As an acronym VAST

is visual audio sensory theater.

As nouns the difference between laggard and lethargy

is that laggard is one who lags behind and takes more time than is necessary while lethargy is (pathology) a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns.

As an adjective laggard

is hanging back; loitering.

As nouns the difference between lethargy and exhaustion

is that lethargy is (pathology) a condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns while exhaustion is the point of complete depletion, of the state of being used up.