ACUMEN
insightfulness, acumen
(noun) shrewdness shown by keen insight
acumen
(noun) a tapering point
Source: WordNet® 3.1
Etymology
Noun
acumen (usually uncountable, plural acumens)
Quickness of perception or discernment; penetration of mind; the faculty of nice discrimination.
Synonyms: sharpness, penetration, keenness, shrewdness, acuteness, acuity, wit, foxiness, intelligence, canniness
(botany) A sharp, tapering point extending from a plant.
(anatomy) A bony, often sharp, protuberance, especially that of the ischium.
Source: Wiktionary
A*cu"men, n. Etym: [L. acumen, fr. acuere to sharpen. Cf. Acute.]
Definition: Quickness of perception or discernment; penetration of mind;
the faculty of nice discrimination. Selden.
Syn.
– Sharpness; sagacity; keenness; shrewdness; acuteness.
Source: Webster’s Unabridged Dictionary 1913 Edition