chronic inability to fall asleep or to enjoy uninterrupted sleep
▶ Related adjective: agrypnotic
insomnolence in American English
(inˈsɑmnləns)
noun
sleeplessness; insomnia
a troubled week of insomnolence
Also: insomnolency (inˈsɑmnlənsi)
Derived forms
insomnolent
adjective
insomnolently
adverb
Word origin
[1815–25; in-3 + somnolence]This word is first recorded in the period 1815–25. Other words that entered Englishat around the same time include: aesthetic, coupon, norm, trolley, welterweight