Incubus definition

ĭnkyə-bəs, ĭng-
An evil spirit supposed to descend upon and have sexual intercourse with women as they sleep.
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A nightmare.
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(folklore) An evil spirit or demon who has sexual intercourse with sleeping women.
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An oppressive or nightmarish burden.
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A nightmare.
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Anything oppressive; burden.
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An evil spirit supposed to oppress people while asleep, especially to have sex with women as they sleep.
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A feeling of oppression during sleep, sleep paralysis; night terrors, a nightmare.
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Any oppressive thing or person; a burden.
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One of various of parasitic insects, especially Aphidiinae.
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Other Word Forms

Noun

Singular:
incubus
Plural:
incubi, incubuses

Origin of incubus

  • Middle English from Late Latin alteration of Latin incubō from incubāre to lie down on incubate

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Late Latin incubus, from Latin incubo (“nightmare, one who lies down on the sleeper”), from incubāre (“to lie upon, to hatch”), from in- (“on”) + cubāre (“to lie”).

    From Wiktionary