indemonstrable

/ɪndɪˈmɑnstrəbəl/
adjective
  1. Not able to be proved or demonstrated; impossible to show as true or false.
    • The existence of a perfect circle in nature is indemonstrable, since all real circles have imperfections.
    • Some philosophical claims are indemonstrable, meaning they cannot be proven by logic or evidence.
    • The mathematician argued that certain axioms are indemonstrable and must be accepted as true.
Antonyms
What does "indemonstrable" mean? | whatsthatwordmean | whatsthatwordmean