Went back (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">went back</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 reneged that I've seen before include "Broke a promise" , "Did Welsh" , "Went back on (a promise)" , "Was a rat" , "Go back on, or revoke in card game" .)
(Another definition for regressed that I've seen is " Fell back to a previous state".)