nightmaring

Verb

nightmare (third-person singular simple present nightmares, present participle nightmaring, simple past and past participle nightmared)

1. (intransitive) To experience a nightmare.
   • Brother Fary of Omaha was nightmaring the rest of the night.1931, The Sleeping Car Conductor, page 16
2. (transitive) To imagine (someone or something) as in a nightmare.
   • She was the last person I’d expected to see, although I had not expected to see anyone at all. For a moment I thought it was a nightmare, and that I was nightmaring the whole thing.1983, Shirley Eskapa, chapter 16, in The Secret-Keeper, New York, N.Y.: St. Martin’s Press, →ISBN, page 99
3. (transitive) To trouble (someone or something), as by a nightmare.
   • THe day is broke! Melpomene, be gone; / Hag of my Fancy, let me now alone: / Night-mare my ſoul no more; Go take thy flight / Where Traytors Ghoſts keep an eternal night; […]1660 April 23, a Rural Pen [pseudonym; Robert Wild], Iter Boreale. Attempting Somthing upon the Successful and Matchless March of the Lord General George Monck, from Scotland, to London, the Last...

See all 7 meanings of nightmare