betrayal (n.)

• abuse
• apostasy
• babbling
• backsliding
• bolt
• breakaway
• defection
• defilement
• defloration
• dereliction
• deserter
• desertion
• despoilment
• disclosure
• disloyalty
• divulgement
• divulgence
• faithlessness
• giveaway
• indiscretion
• leak
• perfidy
• priapism
• rape
• ratting
• ravage
• ravishment
• recidivism
• revelation
• schism
• secession
• seduction
• sellout
• telltale
• traitorousness
• treachery
• treason
• violation
• walkout