short sleeper; person who doesn't need much sleep
Refers to someone who naturally requires less sleep than average and functions well on short sleep. The Japanese term 短時間睡眠者 is a synonym.
See also: 短時間睡眠者 (たんじかんすいみんしゃ)
He is a short sleeper and only sleeps four hours a day.
It is said that being a short sleeper has strong genetic factors.
Variant with interpunct; less common in running text.
Loanword from English 'short sleeper'.