from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The condition of forcibly (by someone else, or by a sleep disorder) being kept awake, to the point of noticeably lower alertness. A dangerous amount of sleep deprivation can cause fatal vehicular accidents.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a form of psychological torture inflicted by depriving the victim of sleep
Sorry, no etymologies found.