intr.v., -slid (-slĭd'), -slid·ing, -slides.
To revert to sin or wrongdoing, especially in religious practice.
backslider back'slid'er n.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.