Make clearly known (7)
I believe the answer is:
declare
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make clearly known</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 declare that I've seen before include "Assert" , "Announce formally" , "Proclaim" , "Make a statement, to customs perhaps" , "say" .)