backslid
Verb
The word is derived from backslide
Meaning
of Backslide
Source: Webster's dictionaryExamples
And while I was away from America for three years, she backslid into her old bad habits, and then I got to see and appreciate why I was taken away from her.
The new FITARA scorecard shows that most federal agencies backslid in their implementation of the IT acquisition law, even ones that shined previously.