Sidelong, obliquely (7)
I believe the answer is:
askance
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">sidelong</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">obliquely</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 askance that I've seen before include "Sideways (of look)" , "Indirectly" , "Distrustfully" , "With doubt or mistrust" , "Suspiciously, with disfavour" .)