Origin and history of glamorous

1715, glamer, Scottish, "magic, enchantment" (especially in phrase to cast the glamour), a variant of Scottish gramarye "magic, enchantment, spell," said to be an alteration of English grammar (q.v.) in a specialized use of that word's medieval sense of "any sort of scholarship, especially occult learning," the latter sense attested from c. 1500 in English but said to have been more common in Medieval Latin.

It was popularized in English by the writings of Sir Walter Scott (1771-1832). The sense of "magical beauty, alluring charm" is recorded by 1840. As that quality of attractiveness especially associated with Hollywood, high-fashion, celebrity, etc., by 1939.

Jamieson's 1825 supplement to his "Etymological Dictionary of the Scottish Language" has glamour-gift "the power of enchantment; metaph. applied to female fascination." Jamieson's original edition (1808) looked to Old Norse for the source of the word. Zoëga's Old Icelandic dictionary has glám-sýni "illusion," probably from the same root as gleam.

slang shortening of glamorous, first attested 1936. Glam rock ("characterized by male performers dressed in glamorous clothes, with the suggestion of androgyny or sexual ambiguity" - OED, 1989), attested by 1974. Glamazon "glamourous, dominant woman" attested by 1985 (based on amazon).