Backslide (7)

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">backslide</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for relapse that I've seen before include "Fall back into illness" , "falling back" , "Medical setback" , "A return to illness" , "Deterioration after period of improvement" .)
(Other definitions for regress that I've seen before include "Go backwards, disimprove" , "Return or revert" , "Get worse or go backwards" , "Go back to a lower level" , "Backslide" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">backslide</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for revert that I've seen before include "Go back (to topic)" , "Go back to type" , "Go back to former state or habit" , "Backslide, return to former state" , "Go back to a former practice" .)