betrays
be-trays
verb
Is disloyal or unfaithful to a person, country, or principle.
"She betrays her friends for personal gain."
verb
Unintentionally reveals a secret, feeling, or characteristic.
"His nervous twitch betrays his discomfort."
Thesaurus
Synonyms: sell, fail, grass, tell on, shop, stag, shit, denounce, give away, rat, snitch, bewray
Antonyms: undeceive