Capital of South Korea (5)
I believe the answer is:
seoul
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">capital of south korea</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for seoul that I've seen before include "South Korea capital" , "Olympic venue" , "South Korean capital" , "Asian capital" , "19 [EASTERN] capital" .)