demon

noun

de·​mon ˈdē-mən How to pronounce demon (audio)
variants or
plural demons or daemons
1
a
: an evil spirit
angels and demons
b
: a source or agent of evil, harm, distress, or ruin
the demons of drug and alcohol addiction
confronting the demons of his childhood
2
usually daemon : an attendant (see attendant entry 2 sense 1) power or spirit : genius
3
usually daemon mythology : a supernatural being whose nature is intermediate between that of a god and that of a human being
4
: one that has exceptional enthusiasm, drive, or effectiveness
a demon for work
Doug, putting like a demon, had birdies on the third and sixth …Fred Tupper
5
daemon : a software program or process that runs in the background
A mailer daemon installed on an e-mail system can respond to a piece of incorrectly addressed e-mail by generating an automated message to the sender that the message was undeliverable.J. D. Biersdorfer
demonian adjective

Examples of demon in a Sentence

only in rare cases is the ancient rite of exorcism performed to cast out a troublesome demon a man who was finally able to conquer his demons and kick his drug habit
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Together, the two men battle the forces of evil, each other, and their own demons on the path to salvation. Rosy Cordero, Deadline, 27 May 2025 Other days, some of the old demons on the forehand and the serve resurface. Corey Seymour, Vogue, 23 May 2025 These ghostly demons are said to appear before a person's passing, a premonition that looks identical to the soon-to-be-deceased. Arkansas Online, 22 May 2025 His persecution, presented in spurts across the various timelines, seldom leads to a coherent story of a man being chased by demons of his own making (despite frequent allusions to Mossad catching up to other Nazi leaders). Siddhant Adlakha, Variety, 20 May 2025 See All Example Sentences for demon

Word History

Etymology

Middle English, "evil spirit," borrowed from Late Latin daemōn "evil spirit, pagan deity, idol," going back to Latin, "supernatural being, spirit intermediate between humans and gods," borrowed from Greek daimon-, daímōn "superhuman power, variably evil or beneficent, intervening in human affairs, fate" (Homeric), "personal spirit, bringing luck or ill, that accompanies an individual," "spirit intermediate between humans and gods" (Plato), "evil spirit" (New Testament), probably from dai-, stem of daíomai, daíesthai "to divide, allocate" + -mōn, deverbal noun and adjective suffix — more at tide entry 1

First Known Use

before the 12th century, in the meaning defined at sense 1a

Time Traveler
The first known use of demon was before the 12th century

Cite this Entry

“Demon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/demon. Accessed 4 Jun. 2025.

Kids Definition

demon

noun
de·​mon
variants or daemon
1
: an evil spirit
2
usually daemon : an accompanying power or spirit : genius
3
usually daemon : demigod sense 1
4
: one that has a lot of energy
a demon for work
demonic
di-ˈmän-ik
adjective

More from Merriam-Webster on demon

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