The most common and most likely answer to this crossword clue is the 8 letter word MACHISMO
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More clues leading to the result MACHISMO
- Manliness of American chap and his way of doing things
- Expression of masculinity, measure of speed shown by one's doctor
- Losing two pounds, Malcolm worried about his virility
- Being manly, Greek character rejected document in hands of ex- chairman
- One’s married after church amid revolutionary swagger
- Quality of 14’s stomach is morbidly displayed
- Speed indicator? One’s instant sign of supposed virility
- Held in stomach is mostly a show of masculinity
- At the speed of sound, two seconds of manliness
- Male ego of Scot confronting his doctor
Buddy explains!

The straight part
We know that "Expression of masculinity" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case expression of masculinity = machismo.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 MACHISMO mean?
MACHISMO noun- Exaggerated masculinity