The most common and most likely answer to this crossword clue is the 10 letter word SWAGGERING
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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 SWAGGERING mean?
SWAGGERING verb- To walk with a swaying motion; hence, to walk and act in a pompous, consequential manner.
- To boast or brag noisily; to be ostentatiously proud or vainglorious; to bluster; to bully.
- Boastful, blustering behaviour.
- Boastful, proud, self-confident.