Cryptic crossword clue
Circumference not grand for male amusement 5

The most common and most likely answer to this crossword clue is the 5 letter word MIRTH

M
I
R
T
H

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The straight part
We know that "amusement" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case amusement = mirth.
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 MIRTH mean?

MIRTH noun
  1. The emotion usually following humour and accompanied by laughter; merriment; jollity; gaiety.
  2. That which causes merriment.

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