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Keenness of insight or judgment; mental sharpness; shrewdness (noun)
USA Today Rootonym clue · 6 letters · last seen October 24, 2026
Answer
ACUMEN
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The Root
ACUmeans “sharp”
In a sentence: Oliver was hired for his ACUMEN and exceptional financial reputation as a businessman.
About this clue
The Rootonym clue “Keenness of insight or judgment; mental sharpness; shrewdness (noun)” has the answer ACUMEN (6 letters), built on the root ACU, which means “sharp”. See the full October 24, 2026 Rootonym puzzle for the other three words, or browse all Rootonym answers.
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