• (p. pr. & vb. n.) of Backslide • (a.) Slipping back; falling back into sin or error; sinning. • (n.) The act of one who backslides; abandonment of faith or duty. Found on http://thinkexist.com/dictionary/meaning/backsliding/
Back'slid'ing adjective Slipping back; falling back into sin or error; sinning. « Turn, O backsliding children, saith the Lord. Jer. iii. 14. » Found on http://www.encyclo.co.uk/webster/B/3