The most common and most likely answer to this crossword clue is the 4 plus 2 letter word OPEN UP
I've seen this crossword clue in The Guardian
O
P
E
N
U
P
More clues leading to the result OPEN UP
- Frank’s happy to start firing a gun
- Disclose work on foreign article about Portugal
- Unlock to get one pup out
- Uncover work on raised Indian city
- Speak freely as writer engaged by academic publisher
- Speak freely and reveal what’s there
- Disclose revolutionary French article after work pressure
- Accelerate round marker ahead
- Bare one’s soul, as writer in press
Buddy explains!

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.