a sudden feeling of extreme fear that awakens a sleeping person, usually during slow-wave sleep, and is not associated with a dream or nightmare.
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Origin of night terror
First recorded in 1895–1900
Also called sleep-terror disorder.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for night terrors
a condition in which a person, usually a child, suddenly starts from sleep in a state of extreme fear but cannot later remember the incident
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012