relapse

[1]	get back , backslide , fall back , lapse , slip back , regress , retrogress , recidivate , go back , return , retreat , revert
[2]	decline , get worse , deteriorate , weaken , degenerate , fail , fade , sink , sicken , worsen , get/become worse
[3]	lapse , recidivate , regress , retrogress , fall back

[1]	backsliding , lapse , lapsing , relapsing , reversion , reverting
[2]	backsliding , falling/going back , lapse , lapsing , return , returning , reversion , reverting , regression , regressing , retrogression , retrogressing , recidivism , apostasy
[3]	decline , deterioration , weakening , degeneration , failing , failure , fading , sinking , worsening