Not clearly expressed (12)
I believe the answer is:
inarticulate
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not clearly expressed</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for inarticulate that I've seen before include "Not clearly expressed" , "Lacking fluency" , "I taunt a relic (anag.)" , "Unable to express oneself clearly" , "Tongue-tied" .)