Is Undefinable a Verb?

adjective. 'In both traditions it is undefinable and unexplainable, elusive, frustratingly near and far, always so close yet just outside intellect's reach. '

Which is correct indefinable or undefinable?

As adjectives the difference between undefinable and indefinable. is that undefinable is not definable while indefinable is that cannot be precisely defined or put into words.

Is undefined an adjective?

Lacking a definition or value. That does not have a meaning and is thus not assigned an interpretation (for example, division by zero)