Unconfirmable

Part of speech: adjective

Definitions

1. Unable to be verified as true or accurate; not capable of being supported by evidence or confirmation; lacking sufficient proof to establish certainty
2. Incapable of being substantiated or proven correct; not able to be validated through reliable sources or data; impossible to affirm with confidence
3. Not subject to confirmation or validation; unable to be corroborated by facts or trustworthy information; resistant to establishing verified truthfulness

Etymology: "Unconfirmable" is a plain formation: the prefix "un-", meaning "not", attached to "confirmable," which in turn is "confirm" plus the suffix "-able," meaning "capable of being." Put together, the word describes something that cannot be made certain by evidence, so a claim that cannot be checked or corroborated is unconfirmable. The base "confirm" comes from Latin "confirmare," meaning "to make firm or strengthen," built from "com-" (an intensifying prefix, here "together" or "thoroughly") and "firmare," "to make firm," from "firmus," "firm." So the core idea of the word is firmness: to confirm something is to make it solid, and the unconfirmable is what refuses to become solid.

Synonyms: unverifiable, unsupported, undemonstrable, uncorroborated, unprovable

Antonyms: confirmable, verifiable, provable, corroborated, demonstrable