Amuse oneself (4)
I believe the answer is:
play
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">amuse oneself</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for play that I've seen before include "Stage drama" , "Theatre production" , "Theatre performance" , "Theatrical performance" , "Hamlet, for example" .)