Sufficient for Shakespeare (4)
I believe the answer is:
enow
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sufficient for shakespeare</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 enow that I've seen before include "Enough (archaic)" , "up in Scotland" , "adequate" , "Sufficient in the past" , "Old enough" .)