Mormon

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mid 19th century: the name of a prophet to whom Smith attributed The Book of Mormon .

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(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

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Mormon (n.)

"adherent of the Church of Jesus Christ of Latter-day Saints," 1830, introduced by the religion's founder, Joseph Smith (1805-1844), in Seneca County, N.Y., from Mormon, supposed prophet and author of "The Book of Mormon," explained by Smith as meaning more mon, from English more + Egyptian mon "good." As an adjective by 1842. Related: Mormonism.