The most common and most likely answer to this crossword clue is the 6 letter word UNFOLD
I've seen this crossword clue in The Sunday Telegraph
U
N
F
O
L
D
More clues leading to the result UNFOLD
Buddy explains!
The straight part
We know that "Reveal" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case reveal = unfold.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 UNFOLD mean?
UNFOLD noun- In functional programming, a kind of higher-order function that is the opposite of a fold.
- To undo a folding.
- To turn out; to happen; to develop.
- To reveal.
- To open (anything covered or closed); to lay open to view or contemplation; to bring out in all the details, or by successive development.
- To release from a fold or pen.