regressing
re-gress-ing
verb
Returning to an earlier, less developed, or worse state or condition.
"The patient's condition is regressing rapidly."
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