The life of Riley (4)
I believe the answer is:
ease
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the life of riley</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 ease that I've seen before include "Effortlessness" , "Lessen intensity" , "Make less hard" , "Poise or leisure" , "Freedom from hardship" .)