Backslide

• POS: Verb (usu participle)
• HYPHEN: back=slide

CIDE DICTIONARY

Backslide, v. i. [Back, adv. + slide.].

 To slide back; to fall away; esp. to abandon gradually the faith and practice of a religion that has been professed.  [1913 Webster]

OXFORD DICTIONARY

Backslide, v.intr. (past -slid; past part. -slid or -slidden) relapse into bad ways or error.

Derivative

backslider n.

THESAURUS

Backslide

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