Yes, the word 'sleepiness' is a noun, a word for a physical state.
No it's an adjective.
The abstract noun form of the adjective tired is tiredness.
The word 'sleepier' is not a noun; sleepier is the comparative form of an adjective.positive: sleepycomparative: sleepiersuperlative: sleepiestThe noun form for the adjective sleepy is sleepiness, a common noun.The word sleep is also a noun (a common noun) as well as a verb.
No, drowsy is an adjective. The word drowsy describes a noun by assigning it the attribute of being drowsy. Drowsiness, however, is a noun as it describes the element causing the aforementioned state of being as an object instead of a description.
karolinska sleepiness scale
There is no adverb for sleepiness (tiredness). But there is an adverb for sleep, which is sleepily.
Alzheimer's can cause sleepiness and loss of appetite.
When I'm sleepy, I have sleepiness. When I'm tired, I'm fatigued.
The adverb form of sleepiness is sleepily.An example sentence is: "she sleepily climbed into bed".
The causes of excessive daytime sleepiness include lacking sleep during the night and also some illnesses or their treatment. If someone is having chemotherapy this can cause sleepiness. Also if someone is not eating enough and they are starving this can cause sleepiness.
By sleeping
sleeping