Main Entry:

trai·tor

Pronunciation:

\ˈtrā-tər\

Function:

noun

Etymology:

Middle English traytour, from Anglo-French traitre, from Latin traditor, from tradere to hand over, deliver, betray, from trans-, tra- trans- + dare to give — more at date

Date:

13th century

1 : one who betrays another's trust or is false to an obligation or duty 2 : one who commits treason