sleepiness

As nouns the difference between sleepiness and sleepfulness

is that sleepiness is the property of being sleepy while sleepfulness is the quality of being sleepful.

As nouns the difference between soberness and sleepiness

is that soberness is the state or quality of being sober while sleepiness is the property of being sleepy.

As nouns the difference between grogginess and sleepiness

is that grogginess is the characteristic or quality of being groggy while sleepiness is the property of being sleepy.

As a verb fatigue

is .

As an adjective fatigue

is tired.

As a noun sleepiness is

the property of being sleepy.

As nouns the difference between sleepiness and sheepiness

is that sleepiness is the property of being sleepy while sheepiness is the state or quality of being sheepy.

As nouns the difference between sleepiness and sleetiness

is that sleepiness is the property of being sleepy while sleetiness is the state of being sleety.

As nouns the difference between sleepiness and steepiness

is that sleepiness is the property of being sleepy while steepiness is (obsolete) steepness.

As nouns the difference between sleepness and sleepiness

is that sleepness is the state, condition, or instance of sleeping; sleep; sleepfulness while sleepiness is the property of being sleepy.

As nouns the difference between sleepiness and adrafinil

is that sleepiness is the property of being sleepy while adrafinil is a mild stimulant of the central nervous system used to relieve excessive sleepiness and inattention in elderly patients.

As nouns the difference between sleepiness and hypersomnia

is that sleepiness is the property of being sleepy while hypersomnia is (medicine|pathology) excessive sleepiness.