ælf

Old English ælf (plural ylfe) referred to a powerful, beautiful, and dangerous supernatural being. Anglo-Saxon medical texts describe ælf-shot — sudden sharp pains or paralysis attributed to being struck by elf arrows. The word ælf-adl meant 'elf-sickness.' In Old Norse, álfar were closely associated with the dead and with fertility — they received sacrifices (álfablót) and were respected rather than dismissed. Elves in pre-modern Germanic culture were not small, cute, or helpful. They were something between gods and ghosts.

Tolkien single-handedly rehabilitated the elf. In his letters, he expressed frustration that 'elf' had been diminished to mean either a tiny Christmas figure or a twee flower fairy. His Elves — the Eldar of The Silmarillion and The Lord of the Rings — are tall, immortal, wise, and tragic. They are the highest beings in Middle-earth after the gods. Tolkien wrote in 1954: 'I now deeply regret having used Elves, though this is a word in ancestry and original meaning suited well enough.' He wanted the Anglo-Saxon ælf back. He got it.

The Christmas elf — a small, toymaking worker in Santa's workshop — is an American invention. Louisa May Alcott wrote a book called Christmas Elves in 1856 (never published; the manuscript was lost). The image solidified in the early twentieth century through department store advertising and Coca-Cola campaigns. The Elf on the Shelf, a surveillance toy marketed since 2005, reports children's behavior to Santa. The Anglo-Saxon disease spirit became a corporate surveillance product in 1,100 years.

The word elf persists in unexpected places. Alfred means 'elf-counsel' (ælf + rǣd). Elfrida means 'elf-strength.' Aubrey comes from Alberich (elf-ruler). The personal name tradition preserves the Old English meaning: elves were powerful enough that naming your child after one was a prayer for protection. Nobody names their child after a toymaker.