The most common and most likely answer to this crossword clue is the 8 plus 7 letter word POISONED CHALICE
I've seen this crossword clue in Financial Times
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More clues leading to the result POISONED CHALICE
- Problematic gift of cocaine polished off
- Gift having adverse consequences once policies had changed
- Constabulary admits flipping coin: heads for evil in disguise
- This is likely to cause trouble, his deacon unfortunately being arrested by constabulary
- Chained so uncomfortably in custody? This could have unfortunate consequences
- Threatening item is concealed, I hope
- Unwelcome gift made undrinkable coffee, hated from the start by girl
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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.