Power of decision (3-2)
I believe the answer is:
say-so
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">power of decision</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for say-so that I've seen before include "Authority - rumour" , "Authority to make a decision" , "Mere assertion (colloq.)" , "Authority to make or allow something to happen" , "Authorisation" .)