Origin: 1250–1300; ME
facioun shape, manner < AF
faço(
u)
n, façun, OF
faceon < L
factiōn- (s. of
factiō) a doing, company.
See faction 
Related forms: fash⋅ion⋅less, adjective
Synonyms:
1. mode; fad, rage, craze. Fashion, style, vogue imply popularity or widespread acceptance of manners, customs, dress, etc. Fashion is that which characterizes or distinguishes the habits, manners, dress, etc., of a period or group: the fashions of the 18th century. Style is sometimes the equivalent of fashion, but also denotes conformance to a prevalent standard: to be in style; a chair in the Queen Anne style. Vogue suggests the temporary popularity of certain fashions: this year's vogue in popular music. 4. shape, cut, pattern, figure. 8. frame, construct, mold. 9. suit, fit.
[fash-uh