Troubling signs (5)

I believe the answer is:

omens

(Other definitions for omens that I've seen before include "Harbingers, portents" , "Augurs" , "Signs or warnings for the future" , "Prophetic signs of good or evil" , "Signs of things to come" .)

I've seen this clue in the King Feature Syndicate, the LA Times, the USA Today and the Wall Street Journal.

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