Publicly declare (8)
I believe the answer is:
announce
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">publicly declare</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 announce that I've seen before include "Make known officially" , "Disclose" , "Make public statement, proclaim" , "say" , "Make known, declare" .)