ACUMEN

• Astuteness

• Canniness

• Depth of perception

• Discernment

• Discrimination

• Incisive insight

• Insight

• Insightful quality

• Insightfulness

• Keen insight

• Keen judgment

• Keenness of judgment

• Keenness of mind

• Perspicacity

• Sagacity

• Savvy

• Sharp insight

• Sharp quality

• Sharpness

• Shrewdness

• Smarts

• A tapering point

• Shrewdness shown by keen insight