The Collaborative International Dictionary
Sleeplessly
Sleepless \Sleep"less\, a.
Having no sleep; wakeful.
Having no rest; perpetually agitated. ``Biscay's sleepless bay.''
--Byron. [1913 Webster] -- Sleep"less*ly, adv. -- Sleep"less*ness, n.
Wiktionary
sleeplessly
adv. In a sleepless manner.
WordNet
sleeplessly
adv. without sleep; in a sleepless manner; "he was lying in bed sleeplessly"
Usage examples of "sleeplessly".
Afterward, Gregory would tell himself that it was a waste of time to worry about any of this: if he could only think the matter through, or at least formulate a reasonable theory about what his neighbor was doing behind their mutual wall in the middle of the night, he told himself, he would finally be free from the agonizing hours of tossing sleeplessly in a dark, lonely room.