selling out one's country; betraying one's country; treason
Refers to the act of betraying one's own country for personal gain, often used in political or historical contexts.
He was accused of treason.
Acts of selling out one's country are never forgiven.
愛国 means love and loyalty toward one's country, whereas 売国 means betraying one's country, as for personal or foreign gain.
traitor to one's country; quisling
Compound of 売 (bai, 'sell') and 国 (koku, 'country'), literally 'selling one's country'. The term is used to describe treasonous acts motivated by personal gain.