sanity (n.)

• apprehension
• balance
• caliber
• capacity
• comprehension
• conception
• coolness
• ideation
• intellect
• intelligence
• knowledge
• lucidity
• marbles
• mentality
• mind
• normality
• practicality
• rationality
• reason
• reasonableness
• saneness
• sense
• senses
• sensibleness
• soberness
• sobriety
• soundness
• stability
• understanding
• wit