Strangeness (6)
I believe the answer is:
oddity
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">strangeness</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that oddity is a type of strangeness)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oddity that I've seen before include "Something strange or eccentric" , "Curiosity, curio" , "Strange person/thing" , "Curious item" , "rare thing" .)