sleep deprivation

Noun

 * 1) The condition of being kept awake and not getting enough sleep (as forcibly by someone else, or by a disorder), to the point of noticeably lower alertness.

Translations

 * Finnish: univaje
 * French: manque de sommeil, privation de sommeil
 * German:
 * Hungarian: alvásmegvonás,  alváshiány
 * Polish: deprywacja snu
 * Russian: депривация сна