relapse

v

1.(all in reference to a former state) fall or slip back, revert, Rare. retrovert, regress, retrogress; backslide, lapse, recidivate, fall from grace, apostatize.

2. move backward, reverse, recede, retrocede, ebb; decline, deteriorate, weaken, degenerate, wane, sink, slide.

n

3. regression, retrogression, reversion, falling back, backset; backsliding, lapse, deterioration, degeneration, retrogradation, recidivism, Obs. recidiva-tion; throwback, atavism.

4. retrocession, retirement, retreat, reflux, ebb; decline, setback, fall, downslide, Inf. the skids, weakening, sinking, Inf. turn for the worse, declination.

5.(of illness) return, recurrence, reappearance, recrudescence, metastasis.