relapse

Synonyms: backsliding fall fall from grace lapse loss recidivism recurrence regression repetition retrogression return reversion setback turn for the worse worsening

Antonyms: healing progress strengthening

Synonyms: 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

Antonyms: get better heal progress strengthen