scorn (n.) Look up scorn at Dictionary.com
c.1200, a shortening of Old French escarn "mockery, derision, contempt," a common Romanic word (cf. Spanish escarnio, Italian scherno) of Germanic origin, from Proto-Germanic *skarnjan "mock, deride" (cf. Old High German skern "mockery, jest, sport," Middle High German scherzen "to jump with joy").

Probably influenced by Old French escorne "affront, disgrace," which is a back-formation from escorner, literally "to break off (someone's) horns," from Vulgar Latin *excornare (source of Italian scornare "treat with contempt"), from Latin ex- "without" + cornu "horn."
scorn (v.) Look up scorn at Dictionary.com
c.1200, from Old French escharnir, Anglo-French, Old North French escarnir, from the source of scorn (n.). Related: Scorned; scorning.