The most common and most likely answer to this crossword clue is the 7 letter word SWAGGER
I've seen this crossword clue in Independent
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More clues leading to the result SWAGGER
- Move confidently, putting raw eggs in a salad
- Sign of overconfidence from Surrey opener with tail
- Son faces hazard with extra heart, showing off
- Tail supporting pole, as strut
- Strut and length of material on Mongolian tent
- Place grand in small bet for brag
- Boast made by German after chat about restricting weight
- ‘Small’ bet with grand in boastful style
- Crow: small creature with tail?
- Small happy dog’s air of superiority
Buddy explains!

The straight part
We know that "Strut" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case strut = swagger.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 SWAGGER mean?
SWAGGER noun- Confidence, pride.
- A bold or arrogant strut.
- A prideful boasting or bragging.
- 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.
- Fashionable; trendy.
- An itinerant person who walks from farm to farm carrying a swag and seeking work, often in exchange for food and lodging.
- A fence, a middleman for transactions of stolen goods.