The most common and most likely answer to this crossword clue is the 8 letter word PORTENTS
I've seen this crossword clue in The Times
P
O
R
T
E
N
T
S
More clues leading to the result PORTENTS
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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PORTENTS mean?
PORTENTS noun- Something that portends an event about to occur, especially an unfortunate or evil event; an omen.
- A portending; significance
- Something regarded as portentous; a marvel; prodigy.