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astute
1. Shrewd and discerning; especially, where personal benefit is to be derived.
2. Having or showing shrewdness and discernment; especially, with respect to one's own concerns.
3. Marked by practical hardheaded intelligence: "An astute borrower of funds always reads the small print in the contract."
4. Etymology: from Latin astutus, "crafty", from astus, "guile, cunning".
This entry is located in the following unit: astut-, astu- + (page 1)