Main Entry: trea·son

Pronunciation: \ˈtrē-z^ən\

Function: noun

Etymology: Middle English tresoun, from Anglo-French traisun, from Latin tradition-, traditio act of handing over, from tradere to hand over, betray — more at traitor

Date: 13th century

1 : the betrayal of a trust : treachery
2 : the offense of attempting by overt acts to overthrow the government of the state to which the offender owes allegiance or to kill or personally injure the sovereign or the sovereign's family