Admit, own up (7)
I believe the answer is:
confess
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">admit</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that confess is a more specific form of the action admit)</span><br/ ><br/ >'<span class="explanation-format__original">own up</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for confess that I've seen before include "Admit (to wrongdoing)" , "Plead guilty (in order to receive absolution?)" , "Tell a priest one's sins" , "Admit (to crime)" , "Concede" .)