verb see: traitor Date: 13th century transitive verb to lead astray, to deliver to an enemy by treachery, to fail or desert especially in time of need , 4. to reveal unintentionally , show , indicate , to disclose in violation of confidence , intransitive verb to prove false, see: reveal ~al noun ~er noun
BETRAY
Meaning of BETRAY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012