Reverse Dictionary: SLEEPLESS

ADJECTIVES
 INSOMNOLENT sleepless, unable to sleep → 1892
 WAKENSOME sleepless easily roused from sleep → 1856 Eng. dial.
► WAKERIFE sleepless, wakeful, easily wakened; alert, vigilant → c1480 Sc. & Eng. dial.

NOUNS
 WAKERIFENESS sleeplessness; the state of wakefulness → 1891 Sc.

NOUNS – PERSON
 INSOMNOLENT a person who is unable to sleep; a person affected with insomnia → 1892

VERBS
 FALL BY ONE’S REST to be sleepless → Bk1900 Sc.
 VIGILATE to be sleepless or wakeful → 1758 obs.
 WILCOX to spend an uneasy, sleepless night → 1916  Amer. dial. (Bk.)