regresses
re-gress-es
verb
Moves back to an earlier, less developed, or worse state or condition.
"The patient's condition regresses without proper care."
Thesaurus
Synonyms: retrogression, reversion, retroversion, regression, regress, retrovert, return, turn back, revert, reasoning backward, recidivate, relapse
Antonyms: advance, come along, come on, get along, get on, progress, shape up