The most common and most likely answer to this crossword clue is the 10 letter word DISCOVERED
I've seen this crossword clue in The Times
D
I
S
C
O
V
E
R
E
D
More clues leading to the result DISCOVERED
- Came across as very angry-looking, having swallowed drug after party
- Record left by journalist found unexpectedly?
- Found out detectives get protected
- Spotted second fielder conked out on the boundary
- Found daughter is dressed
- Detective’s reported on being found out
- Detected journalist’s halo maybe!
- Unearthed record of French uprising guards ended
- Figured out Spinner's Across cluefinally
Buddy explains!

The straight part
We know that "Came across" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case came across = discovered.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 DISCOVERED mean?
DISCOVERED verb- To find or learn something for the first time.
- To remove the cover from; to uncover (a head, building etc.).
- To expose, uncover.
- To create by moving a piece out of another piece's line of attack.
- To reveal (information); to divulge, make known.
- To reconnoitre, explore (an area).
- To manifest without design; to show; to exhibit.