Etymology
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Iscariot 
surname of Judas, betrayer of Jesus, in New Testament, from Latin Iscariota, from Greek Iskariotes, said to be from Hebrew ishq'riyoth "man of Kerioth" (a place in Palestine). In English from 1640s as a noun meaning "traitor." Related: Iscariotical.
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Aceldama 
late 14c., potter's field near Jerusalem purchased with the money Judas Iscariot took to betray Jesus, literally "place of bloodshed," from Greek Akeldama, rendering an Aramaic (Semitic) name akin to Syriac haqal dema "the field of blood." So called for being purchased with blood-money.
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