Near; muggy (5)
I believe the answer is:
close
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">near</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">muggy</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for close that I've seen before include "residential street" , "Meeting with a UFO?" , "Tightly" , "Dense; nearby" , "cathedral precinct" .)