Least typical
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">least typical</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 oddest that I've seen before include "Queerest" , "Most peculiar or uneven" , "Most curious or unusual" , "Most strange or uneven" , "most bizarre" .)