The most common and most likely answer to this crossword clue is the 6 plus 7 letter word POETIC LICENCE
P
O
E
T
I
C
L
I
C
E
N
C
E
More clues leading to the result POETIC LICENCE
- Entice police chief initially developing freedom in lines
- Relaxation of rules applying to linesmen?
- Allowable departure from fact in Celtic epic one translated
- Excuse for rule-breaking that might be endorsed by grammar police?
- Freedom for Irina Ratushinskaya?
- Storyteller's show of nervousness — permit him the freedom to play with words
Buddy explains!

The straight part
We know that "freedom to play with words" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case freedom to play with words = poetic licence.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.