Wiktionary
backslides
vb. (en-third-person singular of: backslide)
Usage examples of "backslides".
WeVe all talked to him about it over the years, but he backslides from time to time.
We’ve all talked to him about it over the years, but he backslides from time to time.
Keep an eye on her and do the usual testing let me know at once if she backslides.