From Middle English night-mare, from Old English *nihtmare, equivalent to . Cognate with Scots nichtmare and nichtmeer, Dutch nachtmerrie, Middle Low German nachtmÄr, German Nachtmahr.
Modern English dictionary
Explore and search massive catalog of over 900,000 word meanings.
Word of the Day
Get a curated memorable word every day.
Challenge yourself
Level up your vocabulary by setting personal goals.