viability (n.)

• acceptability
• achievability
• actability
• activation
• adequacy
• admissibility
• agreeability
• animation
• attainability
• birth
• existence
• feasibility
• immortality
• life
• lifetime
• liveliness
• living
• longevity
• manageability
• maneuverability
• operability
• practicability
• practicality
• satisfactoriness
• sufficiency
• tenability
• vitality
• vivacity