indemonstrable

[in-di-mon-struh-buhl, in-dem-uhn-]

adjective

1. not demonstrable; incapable of being demonstrated or proved.

indemonstrable

/ ˌɪndɪˈmɒnstrəbəl /

adjective

1. incapable of being demonstrated or proved

Other Word Forms

• indemonstrability noun
• indemonstrableness noun
• indemonstrably adverb

Word History and Origins

Origin of indemonstrable¹

First recorded in 1560–70; in- ³ + demonstrable

Example Sentences

Indemonstrable, in-de-mon′stra-bl, adj. that cannot be demonstrated or proved.—n.

From Project Gutenberg

In mathematics, according to Euclid's treatment, the axioms alone are indemonstrable first principles, and all demonstrations are in gradation strictly subordinated to them.

From Project Gutenberg

Critical Reason, which realizes that deceptive fictions are not true thought, but dreams—not the result of ripe intellectual effort, but of the childish play of the imagination, seeks the roots of Morality not in the air or in the ether, but in the solid earth; not in some indemonstrable, transcendental sphere, but in an obvious need of human nature.

From Project Gutenberg

To Euclid’s successors this axiom had signally failed to appear self-evident, and had failed equally to appear indemonstrable.

From Project Gutenberg

Kant begins by distinguishing two forms which idealism can take according as it regards the existence of objects in space as false and impossible, or as doubtful and indemonstrable.

From Project Gutenberg