Slackly (7)
I believe the answer is:
loosely
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">slackly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for loosely that I've seen before include "Not exactly" , "Vaguely" , "Approximately" , "without restraint" , "more or less" .)