Pronunciation: (bi-trā'), [key]
1. to deliver or expose to an enemy by treachery or disloyalty: Benedict Arnold betrayed his country.
2. to be unfaithful in guarding, maintaining, or fulfilling: to betray a trust.
3. to disappoint the hopes or expectations of; be disloyal to: to betray one's friends.
4. to reveal or disclose in violation of confidence: to betray a secret.
5. to reveal unconsciously (something one would preferably conceal): Her nervousness betrays her insecurity.
6. to show or exhibit; reveal; disclose: an unfeeling remark that betrays his lack of concern.
7. to deceive, misguide, or corrupt: a young lawyer betrayed by political ambitions into irreparable folly.
8. to seduce and desert.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.http://www.infoplease.com/dictionary/betray