The most common and most likely answer to this crossword clue is the 6 letter word RECANT
I've seen this crossword clue in Independent
R
E
C
A
N
T
More clues leading to the result RECANT
- Withdraw money that’s regularly paid to carry around
- Part of army is unable to disavow
- Soldier is unable to withdraw
- Take back bombastic outburst about English Conservative
- Soak tucking into drink has to withdraw, colouring
- Deny being divided over the return of bill
- Withdraw right to receive impeccable service up north
- Engineers corps are not able to withdraw
- Take back hypocritical talk in lessons about religion
- Change one’s mind with respect to hypocritical talk
Buddy explains!

The straight part
We know that "Deny" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case deny = recant.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 RECANT mean?
RECANT verb- To withdraw or repudiate a statement or opinion formerly expressed, especially formally and publicly.