Subtle distinction (6)
(Other definitions for nicety that I've seen before include "Subtle difference" , "Fine distinction" , "shade?" , "Judge to a . . . . . . - with precision" , "Small detail" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">subtle distinction</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for nuance that I've seen before include "Subtle shade of meaning" , "Fine distinction" , "Subtle difference of meaning" , "Cue Ann into slight shade" , "Subtlety, nicety" .)