Flowing easily (5)
I believe the answer is:
fluid
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">flowing easily</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 fluid that I've seen before include "Aqueous" , "Liquid or gas" , "Not solid" , "Flowing" .)