Faint notion (7)
I believe the answer is:
inkling
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">faint notion</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 inkling that I've seen before include "Suspicion, hunch" , "Faint notion" , "Thought" , "Vague suspicion" , "Slight suggestion or vague understanding" .)