verb
-trays; -trayed; -traying
[+ obj] to give information about (a person, group, country, etc.) to an enemy
to hurt (someone who trusts you, such as a friend or relative) by not giving help or by doing something morally wrong
to show (something, such as a feeling or desire) without wanting or trying to
to reveal (something that should not be revealed)
to do something that does not agree with (your beliefs, principles, etc.)