What does unprovable mean?
Unprovable is an adjective meaning that something cannot be proved or established as true. It is commonly applied to claims, allegations, assertions, and arguments when the available evidence is insufficient to demonstrate them, or when the proposition is impossible to establish in principle. The word often appears in formal and legal contexts, but it is also used in ordinary discussion of evidence and knowledge. Its force is stronger than that of unproven: an unproven claim has not yet been established, whereas an unprovable claim cannot be established with the available or conceivable evidence. Nevertheless, calling a statement unprovable does not logically establish that it is false; lack of proof and falsity are different matters. Unprovable is therefore useful for distinguishing the status of a proposition from the truth of that proposition. It combines the prefix un-, meaning “not,” with prove and the suffix -able, producing a transparent description of something that is not open to demonstration.
adjectiveIncapable of being proved or established as true.
- Incapable of being proved or demonstrated as true.
"Without reliable evidence, the allegation remains an unprovable claim."
"The prosecution's case was dismissed because the key allegation was unprovable."
"Some scientific claims remain unprovable until stronger evidence becomes available."
An unprovable claim may still be true; saying that proof is impossible is not the same as proving it false.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unprovable come from?
English unprovable was formed from the negating prefix un-, the verb prove, and the suffix -able. Its components ultimately derive from Latin, including probare, meaning “to test or prove,” and the suffix -abilis, meaning “able to be.” The same Latin root appears in English words such as proof, approve, disprove, and reprove, while the negative prefix gives unprovable its modern meaning.
Related word forms
How unprovable is actually used
Used chiefly in formal contexts, especially those involving evidence, allegations, arguments, and law. It is stronger than unsupported and distinct from unproven, which describes something not yet established rather than something incapable of proof.
Easily confused with unprovable
Unprovable means that a claim cannot be proved, whereas unproven means that it has not yet been proved or established.