The most common and most likely answer to this crossword clue is the 9 plus 5 letter word FORBIDDEN FRUIT
I've seen this crossword clue in The Guardian
F
O
R
B
I
D
D
E
N
F
R
U
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T
More clues leading to the result FORBIDDEN FRUIT
- Apple or half a banana?
- Offer put in exchanged for refund: it's an enticement
- Sick of rude Brit, find illicit pleasure
- What might be an illicit date?
- The first thing pilfered to fund Firebird production?
- Apple, perhaps, is in favour of offer to study profits
- Such as dates that can’t be kept?
- Adam’s apple?
- Apple at first following intruder — FBI do bust
- Temptation on account of offer — study yield
Buddy explains!
The straight part
We know that "The first thing pilfered" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case the first thing pilfered = forbidden fruit.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.