Lingo
blood will out
used to suggests that a person's true character or nature will eventually be exposed, despite any attempts to conceal it
The proverb "blood will out" suggests that a persons true nature or origins will eventually be revealed. Its origin is linked to ancient beliefs about heredity and the idea that traits passed down through family lines are inevitable. The saying is often used to highlight that inherited qualities, whether good or bad, will eventually show themselves, regardless of efforts to conceal them, often in behavior or personality.
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