Synonyms for Reverting (same or very similar meaning)
WordNet sense 1 (tending to return to an earlier state):
returningWordNet sense 2 (opposing progress; returning to a former less advanced state):
regressiveWordNet sense 3 (a failure to maintain a higher state):
lapse, relapse, reversion, backsliding, lapsing, relapsing, relapseFrom the ODE community, based on WordNetadd/edit