adj .
capable of living ; workable 생존할 수 있는 ; 실행할 수 있는

• When a doctor says that a patient is no longer viable, it's time to begin planning a funeral.
• A fetus is said to be viable when it has developed to the point where it is capable of surviving outside the womb.
• Harry's plan for storing marshmallows in the dome of the Capitol just wasn't viable.
  국회의사당의 둥근 지붕 안에 마쉬멜로우를 가득 채우려던 해리의 생각은 정말로 실현가능성이 없는 일이었다.
• Something that is viable has viability.