Definition

Something that cannot be proven or shown to be true.

Example

The theory was interesting, but it remained indemonstrable despite many attempts to validate it.

Conversation

Have you heard about that theory they say is true but can't be proven?

Yeah, I've read about it; it's kind of intriguing.

It just seems odd to accept something as valid if it's indemonstrable.

I know what you mean, but sometimes we have to explore the unknown.

Synonyms & Antonyms

Root Explanation

Indemonstrable is formed from "in-" (meaning not) and "demonstrabilis" (from Latin, meaning able to be demonstrated). The word refers to something that cannot be demonstrated or proven.

Memory Tip

Think of 'not' ('in-') being able to be 'demonstrated' — that's why indemonstrable means something that cannot be proven.

Visually Confused Words