Definition of "retrogress"

retrogress

verb
third-person singular simple present retrogresses, present participle retrogressing, simple past and past participle retrogressed
1. (intransitive) To return to an earlier, simpler or worse condition; to regress.
2. (intransitive) To go backwards; to retreat.
3. (intransitive) To return to bad behaviour; to relapse.
noun
plural retrogresses
1. A retrogression.