The most common and most likely answer to this crossword clue is the 2 plus 2 plus 4 letter word BE IN TIME
I've seen this crossword clue in Independent
B
E
I
N
T
I
M
E
Buddy explains!
The straight part
We know that "to meet deadline" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to meet deadline = be in time.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.