nonviable

As an adjective nonviable

is not viable: not capable of independent life; not practicable.

As a noun dead is

tooth.

As adjectives the difference between nonviable and unlikely

is that nonviable is not viable: not capable of independent life; not practicable while unlikely is not likely; improbable; not to be reasonably expected.

As an adverb unlikely is

in an improbable manner.

As a noun unlikely is

something or somebody considered unlikely.

As adjectives the difference between nonviable and undefined

is that nonviable is not viable: not capable of independent life; not practicable while undefined is lacking a definition or value.

As adjectives the difference between nonviable and inviable

is that nonviable is not viable: not capable of independent life; not practicable while inviable is unable to sustain its own life.

As adjectives the difference between unviable and nonviable

is that unviable is an alternative spelling of lang=en while nonviable is not viable: not capable of independent life; not practicable.

As adjectives the difference between nonviable and nonliable

is that nonviable is not viable: not capable of independent life; not practicable while nonliable is not liable.

As an adjective nonviable

is not viable: not capable of independent life; not practicable.

As a noun nonviability is

the state or condition of being nonviable; impracticality.