viable

adj

1. Able to live on its own (as for a newborn).
2. Able to be done, possible, practicable, feasible.

   “a viable option”

3. Capable of working successfully

   “Barker believed that evidence was emerging that a "solid proportion" of operations were "grossly uneconomic", and that no amount of improvement in equipment would make them viable. He suggested that "while the superstructure of the report is correct, the foundations require radical re-examination".”

4. Able to live and develop.

noun

1. An organism that is able to live and develop.