desertion (n.)

• abandonment
• apostasy
• atheism
• backsliding
• betrayal
• bolt
• breakaway
• decampment
• defection
• defenselessness
• degeneration
• dereliction
• deserter
• desolation
• disappearance
• disloyalty
• elopement
• exit
• faithlessness
• flight
• forlornness
• hegira
• helplessness
• homelessness
• impiety
• impiousness
• irreligion
• irreverence
• lapse
• ratting
• recidivism
• renunciation
• schism
• secession
• skedaddle
• treason
• undutifulness
• walkout