(Informal) One that is unpleasant, ugly, or disagreeable:
A false idea or conception; belief or opinion not in accord with the facts
An evil supernatural being; a devil.
The inflicting of severe pain, often, specif., in order to obtain information or a confession, get revenge, etc.
Something seen by other than normal sight; something perceived in a dream, trance, etc. or supernaturally revealed, as to a prophet
A female demon supposed to descend upon and have sexual intercourse with a man while he sleeps.
Any difficult, painful, or trying experience; severe trial
A state of abstraction; a trance:
A capricious or fantastic idea; a conceit.
A romantic liking or interest:
The definition of a fiend is someone who obsesses over an activity or thing.
An inclination or tendency of a specified kind:
An instance of such testing, especially as part of a series of tests or experiments:
(Slang, former) One who lives by bumming
Find another word for nightmare. In this page you can discover 27 synonyms, antonyms, idiomatic expressions, and related words for nightmare, like: horror, illusion, demon, torture, vision, daymare, succubus, ordeal, incubus, dream and fantasy.