The quality of being clever, sharp-minded, and good at understanding things quickly and accurately.
From astute (from Latin astutus meaning 'clever, crafty') plus the suffix -ness, which forms nouns describing qualities. The Latin root likely evolved from Etruscan origins.
Astuteness is what Sherlock Holmes had in spades—the ability to notice tiny details others miss. It's not just intelligence; it's the keen observation and shrewd judgment that lets you see through disguises and lies.
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