What's the origin of disdain?

Answer 1

1dis·dain
Pronunciation: \dis-ˈdān\
Function: noun
Etymology: Middle English desdeyne, from Anglo-French desdaign, from desdeigner
Date: 14th century
: a feeling of contempt for someone or something regarded as unworthy or inferior : scorn
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Main Entry: 2disdain
Function: transitive verb
Etymology: Middle English desdeynen, from Anglo-French desdeigner, dedeigner, from Vulgar Latin *disdignare, from Latin dis- + dignare to deign — more at deign
Date: 14th century
1 : to look on with scorn
2 : to refuse or abstain from because of disdain
3 : to treat as beneath one's notice or dignity
synonyms see despise
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Answer 2

c.1290, from O.Fr. desdeignier, from des- "do the opposite of" + deignier "treat as worthy" (see deign).