A traitor or betrayer, derived from Judas Iscariot, the disciple of Jesus who betrayed him for money in the Bible.
From the name Judas Iscariot in Christian scripture; 'Iscariot' may derive from the Hebrew 'Ish Kerioth' meaning 'man of Kerioth' (a place). His betrayal made 'Iscariot' synonymous with treachery.
Judas Iscariot's betrayal for 30 pieces of silver has been so culturally impactful for 2,000 years that 'Iscariot' became used as a common noun for any traitor—few individuals have shaped language this way.
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