bn:00028869n
Noun Concept
Categories: All articles needing additional references, Category, Sleep, Mental processes
EN
sleepiness  drowsiness  somnolence  Disorder of excessive somnolence  drowsy
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EN
Somnolence is a state of strong desire for sleep, or sleeping for unusually long periods. Wikipedia
State of being drowsy. Wiktionary
A state of drowsiness or sleepiness. Wiktionary
EN
Sleepiness causes many driving accidents WordNet 3.0 & Open English WordNet