Charming

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Middle English (in the senses ‘incantation or magic spell’ and ‘to use spells’): from Old French charme (noun), charmer (verb), from Latin carmen ‘song, verse, incantation’.

wiktionary

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From Middle English charmyng; equivalent to charm +‎ -ing.

etymonline

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charming (adj.)

late 14c., "using charms;" 1610s (implied in charmingly) as "enchanting, delightful;" present-participle adjective from charm (v.).