Original
Middle English (the earliest use being in the phrase original sin ): from Old French, or from Latin originalis, from origin- (see origin).
wiktionary
From Middle English original, from Old French original, from Late Latin orīginālis(“primitive, original”), from Latin orīgō(“beginning, source, origin”); see origin.
etymonline
original (adj.)
early 14c., "first in time, earliest," from Old French original "first" (13c.) and directly from Latin originalis, from originem (nominative origo) "beginning, source, birth," from oriri "to rise" (see origin). The first reference is to sin, synne original, "innate depravity of man's nature," supposed to be inherited from Adam in consequence of the Fall (the modern word order original sin is from 15c.). Also from late 14c., "pertaining to or characteristic of the first stage of anything. Meaning "produced directly by an author, artist, etc." is from 1630s; that of "fresh, novel, new, striking" is by 1782. Related: Originally.
original (n.)
late 14c., "that from which anything is derived;" also "original text," from Old French original and directly from Medieval Latin originale (see original (adj.)). Of photographs, films, sound recordings, etc., from 1918.
