On the surface (5)
(Other definitions for outer that I've seen before include "Ring for double scores on a dartboard" , "Poor shot" , "On the periphery" , "Exterior or external, like space" , "Away from the centre" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">on the surface</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for superficial that I've seen before include "12 [TWO DIMENSIONAL]" , "Not profound" , "Far from thorough" , "Cursory" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">on the surface</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for external that I've seen before include "Belonging to the outside" , "involving foreign nations" , "Coming from outside" , "Lying outside" , "abroad" .)