The Collaborative International Dictionary
Slumberless
Slumberless \Slum"ber*less\, a. Without slumber; sleepless.
Wiktionary
slumberless
a. Without slumber; sleepless, unsleeping.
Usage examples of "slumberless".
Long have I borne thy service, through the stress Of rigorous years, sad days and slumberless nights, Performing thine inexorable rites.
Past ages crowd on thee, but each one remembers, And the future is dark, and the present is spread Like a pillow of thorns for thy slumberless head.
There was never the tossing and turning that Lillis suffered, or the slumberless hours of staring into nothing while trying to blank her mind and go to sleep.