The most common and most likely answer to this crossword clue is the 6 letter word POETIC
I've seen this crossword clue in The Guardian
P
O
E
T
I
C
More clues leading to the result POETIC
- Protect piece oddly only appearing in verse
- On return, refer to work in verse
- . American writer initially tried one chapter in verse
- Quote work recalled with a lyrical style
- Describing one form of justice? Policeman upset about alien one
- Looking up to quote work of lyrical quality
- A lot of credit goes to a writer showing imagination
- About to quote work that’s lyrical
- US writer ‘put it about’ – see, that’s beautifully expressed
- US author twitching, using words rhythmically?
Buddy explains!

The straight part
We know that "imagination" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case imagination = poetic.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 POETIC mean?
POETIC adjective- Relating to poetry.
- Characteristic of poets; romantic, imaginative, etc.
- Connecting to the soul of the beholder.