noun🔗ShareA demon or monster, thought to plague people while they slept and cause a feeling of suffocation and terror during sleep."The child's nightmare about a monster lurking under his bed kept him awake all night. "mythologymindsoulsensationsupernaturalChat with AIVocabulary GamePractice Reading
noun🔗ShareSleep paralysis."The sudden onset of sleep paralysis gave her a terrifying nightmare. "mindbodymedicinesensationdiseasesufferingChat with AIVocabulary GamePractice Reading
noun🔗ShareA very bad or frightening dream."I had a nightmare that I tried to run but could neither move nor breathe."mindsensationemotionChat with AIVocabulary GamePractice Reading
noun🔗ShareAny bad, miserable, difficult or terrifying situation or experience that arouses anxiety, terror, agony or great displeasure."Cleaning up after identity theft can be a nightmare of phone calls and letters."mindsensationemotionsufferingsituationChat with AIVocabulary GamePractice Reading
