backslidden
  (vbl.)backslide的過去分詞
  Back·slide v. i.   [imp. Backslid p. p. Backslidden Backslid; p. pr. & vb. n.  Backsliding.]  To slide back; to fall away; esp. to abandon gradually the faith and practice of a religion that has been professed.
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  backslide
       v : drop to a lower level, as in one's morals or standards [syn:
            lapse]
       [also: backslidden, backslid]