adjective. Impossible to answer or refute; incontrovertible.

Not to be satisfactorily answered; not susceptible of refutation: as, an unanswerable argument.

adjective. Not answerable; irrefutable; conclusive; decisive.

adjective. Not answerable; impossible to answer.

adjective. Impossible to dispute or rebut; irrefutable; conclusive.

noun. Something that cannot be answered.

adjective. impossible to answer

"Burke, Porson, Dr. Warburton, and Dr. Farmer, pronounced this piece of criticism convincing and unanswerable; but Dr. Johnson and Steevens would not be convinced, and, moreover, have contrived to answer the _unanswerable_."

incontestable  incontestible  

answerless  unanswerability  unanswerableness  unanswerably  

cogent  contradictory  convince  impervious  impregnable  

absolute  actual  admitting no question  chartered  conclusive