Insufficiently strict (3)
I believe the answer is:
lax
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">insufficiently strict</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for lax that I've seen before include "Slapdash" , "Flaccid" , "Not sufficiently careful" , "Flabby" , "Remiss" .)