Portents (5)
I believe the answer is:
omens
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">portents</span>' is the definition.<br/ ><span class="explanation-format__explanation">('omen' can be a synonym of 'portent')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for omens that I've seen before include "Portents, prophetic signs" , "Prognostications" , "Signs or warnings for the future" , "Auguries" , "Prophetic signs of good or evil" .)