Threat (6)
I believe the answer is:
menace
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">threat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for menace that I've seen before include "Threat; threaten" , "ominous atmosphere" , "A source of danger" , "Intimidation" , "Threat, danger" .)