1. (v. i.) To be or grow worse than one was originally\; hence, to be inferior; to grow poorer, meaner, or more vicious; to decline in good qualities; to deteriorate.

2. (a.) Having become worse than one's kind, or one's former state; having declined in worth; having lost in goodness; deteriorated; degraded; unworthy; base; low.

3. (v. i.) To fall off from the normal quality or the healthy structure of its kind; to become of a lower type.

abandoned adulterate alloy alter altered ameliorate apostate apostatize backslide backslider bad egg bad lot base be changed be converted into be renewed better black sheep bottom out break canker change changeable changed cheapen checker chop chop and change coarsen come about come apart come around come down come round coming apart confound contaminate contaminated converted corrupt corrupted cracking crumbling debase debased debauch debauched debauchee decadent decay decayed decline declining defect defile deflower degrade degraded denature deprave depraved descend desecrate desert despoil deteriorate deteriorating devalue deviant deviate disimprove disintegrate disintegrating dissolute dissolve into chaos distort diverge divergent diversify draining drooping dwindling ebbing effete err fading failing fall fall back fallen angel falling flagging flagitious flop fragmenting get worse go astray go downhill go to pot go wrong going to pieces grow worse haul around have a comedown hit rock bottom ignoble improve improved infamous infect inferior jibe languishing lapse lecher let down lost sheep lost soul low marcescent meliorate metamorphosed metastasized miscreant misuse mitigate modified modulate morally polluted mutant mutate nefarious overripe pervert perverted pimp pining poison pollute polluted profligate prostitute qualified rake rakehell ravage ravish reach the depths rebuilt recidivist recreant reformed regress regressive relapse renegade renege renewed reprobate retrograde retrogress retrogressive return revert revive revived revolutionary rot rotten roue scapegrace shift shriveling sicken sink sinking slacken sliding slip slip back slipping slumping sorry lot steeped in iniquity subsiding subversive swerve tabetic tack taint tainted take a turn touch bottom traitorous transformed translated transmuted treasonable trip trollop turn turn against turn aside turn into turn the corner turn traitor twist ulcerate undergo a change unhealthy unmitigated untune vary veer vice-corrupted vicious vile villainous violate vitiate vitiated vulgarize waning warp warped wasting wastrel weaken whore wilting withering worse worsen worsening