Cryptic crossword clue
Sporting poet has a grand finish 7

The most common and most likely answer to this crossword clue is the 7 letter word LARKING

I've seen this crossword clue in The Daily Telegraph
L
A
R
K
I
N
G

Buddy explains!

The straight part
We know that "Sporting" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sporting = larking.
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 LARKING mean?

LARKING verb
  1. To catch larks (type of bird).
LARKING verb
  1. To sport, engage in harmless pranking.
  2. To frolic, engage in carefree adventure.
LARKING noun
  1. A spirited or playful adventure.

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