One of the mysteries of the English language finally explained.
1‘a macho, non-caring image’
male, aggressively male, masculine, unpleasantly masculine
manly, virile, red-blooded, swashbuckling
informal butch, laddish
1‘he was a macho at heart’
red-blooded male, macho man, muscleman
informal he-man, tough guy, stud
North American vulgar slang cocksman
2‘macho is out’
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