Cryptic crossword clue
Border cut off in fog that swirls? It’s ominous 10

The most common and most likely answer to this crossword clue is the 10 letter word FOREBODING

I've seen this crossword clue in The Daily Telegraph
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Buddy explains!

The straight part
We know that "It’s ominous" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it’s ominous = foreboding.
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 FOREBODING mean?

FOREBODING verb
  1. To predict a future event; to hint at something that will happen (especially as a literary device).
  2. To be prescient of (some ill or misfortune); to have an inward conviction of, as of a calamity which is about to happen; to augur despondingly.
FOREBODING noun
  1. A sense of evil to come.
  2. An evil omen.
FOREBODING adjective
  1. Of ominous significance; serving as an ill omen; foretelling of harm or difficulty.

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