intransitive verb. To revert to bad habits or lapse in religious practice.

To slide back, in a figurative sense; apostatize; turn from the faith; depart from or abandon religious principles or practices.

intransitive verb. To slide back; to fall away; esp. to abandon gradually the faith and practice of a religion that has been professed.

verb. To regress; to slip backwards or revert to a previous, worse state.

verb. To shirk responsibility; to renege on one's obligations or commitments.

verb. drop to a lower level, as in one's morals or standards

"I find in myself a natural aversion to my duty, and to spiritual and divine exercises, and a propensity to that which is evil, such an inclination towards the world and the flesh as amounts to a propensity to backslide from the living"

apostatize  desert  relapse  

backslid  backslidden  backsliding  

drop away  drop-off  fall away  slip  

cock  defect  degenerate  desert  err  

backslid  backslidden  

backslidden  backslides  backsliding