THESAURUS
amendment, atavism, backset, backward deviation, change of allegiance, change of heart, change of mind, falling back, improvement, lapse, new birth, palingenesis, palingenesy, reanimation, rebirth, reclamation, recurrence, redemption, reform, reformation, refreshment, regeneracy, regenerateness, regeneration, regenesis, regression, rejuvenation, rejuvenescence, relapse, renaissance, renascence, renewal, resurgence, resurrection, resuscitation, return, reversal, reverse, reversion, revival, revivescence, revivescency, revivification, second wind, second youth, setback, throwback
ROGET THESAURUS
Relapse
N
relapse, lapse, falling back, retrogradation, deterioration, backsliding, recidivation, recidivism, recidivity,
recrudescence.