Akademik

reversionist
noun
someone who lapses into previous undesirable patterns of behavior
Syn: ↑recidivist, ↑backslider
Derivationally related forms: ↑backslide (for: ↑backslider), ↑recidivism (for: ↑recidivist)
Hypernyms: ↑wrongdoer, ↑offender

Useful english dictionary. 2012.