The most common and most likely answer to this crossword clue is the 7 letter word SITWELL
I've seen this crossword clue in The Guardian
S
I
T
W
E
L
L
More clues leading to the result SITWELL
- Desirable quality in grand name of literary siblings
- A certain something penned by excellent poet
- Take exam on flourishing poet
- Meet flourishing poet
- It occupies stylish poet
- Poet to look good?
- Literary family have comfortable seat
- English poet keen about the thing in question
- Pose with fine writer
- Put it inside balloon to be acceptable
Buddy explains!

The straight part
We know that "poet" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case poet = sitwell.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.