KJV Dictionary Definition: backslide
backslide
BACKSLI'DE, v.i. back and slide. To fall off; to apostatize; to turn gradually from the faith and practice of christianity. Jer.iii. Hos.iv.
backslider
BACKSLI'DER, n. An apostate; one who falls from the faith and practice of religion. Prov.xiv.
2. One who neglects his vows of obedience and falls into sin.
backsliding
BACKSLI'DING, n. The act of apostatizing from faith or practice; a falling insensibly from religion into sin or idolatry. Jer. v.6.