acumen
/əˈkjuːmən/noun
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Quickness of perception or discernment; penetration of mind; the faculty of nice discrimination.
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A sharp, tapering point extending from a plant.
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A bony, often sharp, protuberance, especially that of the ischium.
Synonyms:
acuity, acuteness, canniness, foxiness, intelligence, keenness, penetration, sharpness, shrewdness, wit