If many believe that black cats are evil but this isn't true, then this is an example of a myth.
The stories the Ancient Greeks told to explain the sun and the Earth are an example of myths.
A star whose fame turned her into a myth; the pioneer myth of suburbia.
Father Flanagan was legendary, his institution an American myth. (Tucson (Arizona) Citizen, 20 September 1979, 5A/3, cited after OED)
Myth was the product of man's emotion and imagination, acted upon by his surroundings. (E. Clodd, Myths & Dreams (1885), 7, cited after OED)
Origin of myth
- New Latin mȳthus from Late Latin mȳthos from Greek mūthos
From American Heritage Dictionary of the English Language, 5th Edition
- From Ancient Greek Î¼á¿¦Î¸Î¿Ï‚ (muthos, “word, humour, companion, speech, account, rumour, fable"). English since 1830.