Free-and-easy (6)
I believe the answer is:
casual
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">free-and-easy</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for casual that I've seen before include "Offhand - informal" , "Cursory or nonchalant" , "Relaxed, unconcerned" , "Free-and-easy" , "Informal or cursory" .)