The most common and most likely answer to this crossword clue is the 3 plus 3 plus 2 letter word ALL THE GO
I've seen this crossword clue in Independent
A
L
L
T
H
E
G
O
More clues leading to the result ALL THE GO
Buddy explains!
The straight part
We know that "hip?/ (3,3,2)" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hip?/ (3,3,2) = all the go.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.