The most common and most likely answer to this crossword clue is the 7 letter word BIGHEAD
I've seen this crossword clue in Financial Times
B
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More clues leading to the result BIGHEAD
Buddy explains!
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 BIGHEAD mean?
BIGHEAD noun- (especially used by children) A person having an inflated opinion of himself; a conceited or arrogant person.
- One of several species of fish having a large head.
- One of several animal diseases that cause swelling of the head.