To give up (a person) treacherously to his enemies; to betray (a person, a cause, country, etc.).

transitive. To deceive, betray, seduce.

transitive. To betray.

transitive. To deceive, cheat, betray, play false with.

transitive. To give up to, or place in the power of an enemy, by treachery or disloyalty.

transitive. To betray.

To put (a person) in the power of an enemy or opponent by disloyalty or treachery; to betray.

transitive. To betray.

transitive. To deceive, cheat, play false with. (See also treachetour, n.)

transitive. = betray, v.

transitive. To deliver treacherously into the hand or power of an enemy; = betray, v. 1.

To reveal the presence of, or expose (a fugitive) to his enemies, or to justice; to betray. Obsolete.

= betray, v.

slang. To betray. Obsolete.

transitive. To betray (a person). Obsolete. rare.

transitive. To give incriminating evidence against (an accomplice or associate); to inform against, betray. Now rare.

transitive. slang. To deceive or betray (a person with whom one is supposedly cooperating). Obsolete.

to go back on (also upon). colloquial (originally U.S.). To prove faithless or disloyal to (a person); to betray. Now rare.

colloquial (originally U.S.). To betray, esp. for one's own benefit.