Jupiter's Greek counterpart (4)
I believe the answer is:
zeus
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">jupiter's greek counterpart</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for zeus that I've seen before include "Top deity on Olympus" , "Chief among Greek gods" , "Greek god of gods" , "Chief Olympian deity" , "old Greek" .)