Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class V. Words Releasing to the Voluntary Powers
Division (I) Individual Volition
Section II. Prospective Volition
2. Degree of Subservience

661. Relapse.

   NOUN:RELAPSE, lapse; falling back &c. v.; retrogradation (retrogression) [See Regression]; deterioration [See Deterioration].
  [RETURN TO, OR RECURRENCE OF, A BAD STATE] backsliding, recidivation [obs.]; recidivism, recidivity; recrudescence.
   VERB:RELAPSE, lapse; fall -, slide -, slip -, sink- back; have a relapse, be overcome, be overtaken, yield again to, fall again into; return; retrograde [See Regression]; recidivate [rare]; fall off [See Deterioration]- again.
   ADJECTIVE:BACKSLIDING, relapsing &c. v.; recidivous, recidivistic, recrudescent, retrograde.