Medical Dictionary


adj sleep·less \ˈslē-pləs\

Medical Definition of SLEEPLESS

:  not able to sleep :  insomniac
sleep·less·ness noun


July 03, 2015
interpellate Hear it
to formally question a public official
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears