Zeno follower (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">zeno follower</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for stoic that I've seen before include "Unemotional" , "One patient under misfortune" , "Phlegmatic type" , "Greek in school" , "One showing endurance during adversity" .)