Synonyms and related words :
cock, defect, degenerate, desert, err, fall, fall again into, fall astern, fall away, fall back, fall behind, fall from grace, get behind, go astray, go backwards, go behind, go wrong, have a relapse, jerk back, lapse, lapse back, lose ground, pull back, recede, recidivate, recur to, regress, relapse, retrocede, retroflex, retrograde, retrogress, retrovert, return, return to, reverse, revert, revert to, sink back, slide back, slip, slip back, tergiversate, trip, turn, yield again to