a traditional or legendary story, usually concerning some being or hero or event, with or without a determinable basis of fact or a natural explanation, esp. one that is concerned with deities or demigods and explains some practice, rite, or phenomenon of nature.
2.
stories or matter of this kind: realm of myth.
3.
any invented story, idea, or concept: His account of the event is pure myth.
4.
an imaginary or fictitious thing or person.
5.
an unproved or false collective belief that is used to justify a social institution.
A traditional, typically ancient story dealing with supernatural beings, ancestors, or heroes that serves as a fundamental type in the worldview of a people, as by explaining aspects of the natural world or delineating the psychology, customs, or ideals of society: the myth of Eros and Psyche; a creation myth.
Such stories considered as a group: the realm of myth.
A popular belief or story that has become associated with a person, institution, or occurrence, especially one considered to illustrate a cultural ideal: a star whose fame turned her into a myth; the pioneer myth of suburbia.
A fiction or half-truth, especially one that forms part of an ideology.
A fictitious story, person, or thing: "German artillery superiority on the Western Front was a myth"(Leon Wolff).
[New Latin mȳthus, from Late Latin mȳthos, from Greek mūthos.]
1830, from Gk. mythos "speech, thought, story, myth," of unknown origin.
Myths are "stories about divine beings, generally arranged in a coherent system; they are revered as true and sacred; they are endorsed by rulers and priests; and closely linked to religion. Once this link is broken, and the actors in the story are not regarded as gods but as human heroes, giants or fairies, it is no longer a myth but a folktale. Where the central actor is divine but the story is trivial ... the result is religious legend, not myth." [J. Simpson & S. Roud, "Dictionary of English Folklore," Oxford, 2000, p.254]
General sense of "untrue story, rumor" is from 1840. Mythical first attested 1678.
Myth\, n. [Written also mythe.] [Gr. my^qos myth, fable, tale, talk, speech: cf. F. mythe.]1. A story of great but unknown age which originally embodied a belief regarding some fact or phenomenon of experience, and in which often the forces of nature and of the soul are personified; an ancient legend of a god, a hero, the origin of a race, etc.; a wonder story of prehistoric origin; a popular fable which is, or has been, received as historical. 2. A person or thing existing only in imagination, or whose actual existence is not verifiable. As for Mrs. Primmins's bones, they had been myths these twenty years. --Ld. Lytton. Myth history, history made of, or mixed with, myths.