Taciturn (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">taciturn</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for reticent that I've seen before include "Uncommunicative" , "Not revealing one's thoughts readily" , "Reserved, shy" , "Reserved, retiring" , "Disinclined to speak" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">taciturn</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tight-lipped that I've seen before include "Uncommunicative" , "Determinedly reticent" , "Taciturn" .)