What is keenly or unduly attentive to one's own interest; close and exact in dealing; shrewd; as, a sharp dealer; a sharp customer. The necessity of being so sharp and exacting. Swift called?

sharp — Keenly or unduly attentive to one's own interest; close and exact in dealing; shrewd; as, a sharp dealer; a sharp customer. The necessity of being so sharp and exacting. Swift. (Webster's 1913.)

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