noun

traitor

traitor, betrayer

He was seen as a traitor to his country.

He was seen as a traitor to his country.

She called him a traitor for revealing her secret.

She called him a traitor for revealing her secret.

((a traitor to sb./sth.)) someone who betrays a person, country, or principle He was a traitor to his own family.

Synonyms: betrayer, turncoat, backstabber; Antonyms: loyalist, patriot

From Latin 'traditor' (one who delivers up), from 'tradere' (to hand over). It shares a root with 'trade' and 'tradition'.

A 'traitor' is someone who 'trades' secrets or loyalty for something else.

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