to fall or slip back into a former state, practice, etc.

to relapse into silence.

to fall back into illness after convalescence or apparent recovery.

to fall back into vice, wrongdoing, or error; backslide

to relapse into heresy.

an act or instance of relapsing.

a return of a disease or illness after partial recovery from it.

noun

healing , progress , strengthening

verb

get better , heal , progress , strengthen

noun

backsliding , fall , fall from grace , lapse , loss , recidivism , recurrence , regression , repetition , retrogression , return , reversion , setback , turn for the worse , worsening , backslide , recidivation , declination , retrocession

verb

backslide , be overcome , be overtaken , degenerate , fade , fail , fall , fall back , lapse , recidivate , regress , retrogress , revert , sicken , sink , slide back , slip back , suffer , turn back , worsen , decline , deteriorate , ebb , recurrence , setback , slip , subside , weaken