The most common and most likely answer to this crossword clue is the 5 plus 9 letter word FALSE PRETENCES
I've seen this crossword clue in The Daily Telegraph
F
A
L
S
E
P
R
E
T
E
N
C
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S
More clues leading to the result FALSE PRETENCES
- Phony presence felt as deception
- Freelance steps out of line, creating deception
- Deception involving secret plan with fees
- Deception used when producing recent EPs, perhaps
- Deception of criminals taking in prelates abroad
- Feels respect — an awful deception
- Deceptive behaviour as drunk fleeces parents
- Barriers broken by real pest involved in deceptive behaviour
Buddy explains!
The straight part
We know that "deception" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case deception = false pretences.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.