Fail to recall (6)
I believe the answer is:
forget
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fail to recall</span>' is the definition.<br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for forget that I've seen before include "Neglect (to do)" , "Fail to remember" , "Don't remember" , "Dismiss from the mind" , "Overlook" .)