1) Acumen 2) Circumspection 3) Clairvoyance 4) Discreetness 5) Gumption 6) Indiscreetness 7) Injudiciousness 8) Intelligence 9) Judiciousness 10) Sagaciousness 11) Sense 12) Wisdom 13) Wit 1) Discernment 2) French word used in English 3) Judgement 4) Judgment 5) Sagaciousness 6) Sapience 7) Shrewdness 8) Wisdom 
• (n.) The quality of being sagacious; quickness or acuteness of sense perceptions; keenness of discernment or penetration with soundness of judgment; shrewdness.
The quality of being sagacious; quickness or acuteness of sense perceptions; keenness of discernment or penetration with soundness of judgment; shrewdness. 'Some [brutes] show that nice sagacity of smell.' (Cowper) 'Natural sagacity improved by generous education.' (V. Knox) ... Synonym: Penetration, shrewdness, judiciousness. ... Sagacity, Penetra...
Sa·gac'i·ty noun [ Latin sagacitas . See Sagacious .] The quality of being sagacious; quickness or acuteness of sense perceptions; keenness of discernment or penetration with soundness of judgment; shrewdness. « Some [ brutes] show that nice sagacity of smell.» Co...
[n] - ability to make good judgments
sagacity Acuteness of mental discernment; aptitude for investigation or discovery; keenness and soundness of judgement in the estimation of persons and conditions, and in the adaptation of means to ends; penetration, shrewdness.
[Wuthering Heights] keen or wise perception.
sagaciousness noun the mental ability to understand and discriminate between relations