Berserk

I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">berserk</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for amok that I've seen before include "(Run) in murderous frenzy" , "Going mad" , "Run thus to run wildly about" , "(Run) in frenzied state" , "In an uncontrolled, often violent, way" .)