Lazy:Diligent::Feasibility:

Impracticability

The word that best completes the analogy lazy:diligent::feasibility:__ is impracticability.

• Lazy means unwilling to work or use energy.
• Diligent means hardworking and conscientious.
• Feasibility means the possibility of something being done or achieved.
• Impracticability means the quality of being impracticable.
• Unsuitability means the quality of being unsuitable.
• Impropriety means the quality of being improper.
• Improper means not in accordance with accepted standards of behavior or conduct.