ACUMEN
Source: 524, 566, 567
ACU'MEN, noun [Latin acumen from acus or acuo.]A sharp point; and figuratively, quickness of perception, the faculty of nice discrimination.
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acumen. Acumen, n. sharpness, quickness of intellect
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A‐cu″men (�), n. [[L. acumen, fr. acuere to sharpen. Cf. Acute.]] Quickness of perception or discernment; penetration of mind; the faculty of nice discrimination. Selden. Syn. — Sharpness; sagacity; keenness; shrewdness; acuteness.