acuity (n.)

• acridity
• acumen
• acuteness
• adroitness
• agility
• alertness
• apperception
• aptitude
• aptness
• astuteness
• attention
• attentiveness
• brightness
• brilliance
• cleverness
• cogency
• dexterity
• discernment
• edge
• esprit
• farsightedness
• flair
• foresight
• foresightedness
• genius
• incisiveness
• insight
• keenness
• longsightedness
• nimbleness
• nous
• penetration
• perception
• perceptiveness
• perspicaciousness
• perspicacity
• perspicuity
• perspicuousness
• pointedness
• prickliness
• promptitude
• promptness
• providence
• punctuality
• quick-wittedness
• quickness
• readiness
• sagaciousness
• sagacity
• savvy
• sensibility
• sharpness
• sleeplessness
• smartness
• smarts
• talent
• thorniness
• trenchancy
• wakefulness