betray
//bɪˈtreɪ//
Verb
betrayInfinitive
betrayPresent tense
betrayedPast tense
betrayedPast participle
betrayingPresent participle
betraysThird-person singular
1
To be disloyal to someone who trusts you, especially by giving information to their enemy or by breaking a promise.
He betrayed his best friend by revealing the secret.
2
To reveal something unintentionally, such as a secret or one's true feelings.
Her trembling voice betrayed her nervousness.
3
To fail to uphold or act against a principle, cause, or ideal that one is expected to support.
He betrayed his principles by accepting the bribe.