The most common and most likely answer to this crossword clue is the 12 letter word STAR-CROSSED
I've seen this crossword clue in Financial Times
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More clues leading to the result STAR-CROSSED
Buddy explains!
The straight part
We know that "Dogged by ill luck/L" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dogged by ill luck/l = star-crossed.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 STAR-CROSSED mean?
STAR-CROSSED adjective- Ill-fated by destiny, the fate of the person being “written in the stars”.