Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

661. Relapse — N. relapse, lapse; falling back &c v.; retrogradation

&c (retrogression) 283 [Obs.]; deterioration &c 659. [Return to, or recurrence of a bad state] backsliding, recidivation†; recidivism, recidivity†; recrudescence. V. relapse, lapse; fall back, slide back, sink back; return; retrograde &c 283; recidivate; fall off again &c 659.