Word Origin & History
sourO.E. sur, from P.Gmc. *suraz (cf. O.N. surr, M.Du. suur, Du. zuur, O.H.G. sur, Ger. Sauer), from PIE base *suro- "sour, salty, bitter" (cf. O.C.S. syru, Rus. syroi "moist, raw;" Lith. suras "salty," suris "cheese"). Fr. sur "sour, tart" (12c.) is a Gmc. loan-word. The verb is attested from c.1300. Sense
EXPANDin whisky sour is from 1885. Sourpuss first attested 1937. Sourball is from 1900 as "constantly grumbling person," 1933 as a type of candy. Sour cream is attested from 1855.
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