unconfirmable
Definitions
Not able to be verified or proven true.
Lacking sufficient evidence to be officially validated or authenticated.
Examples
The rumors regarding the company's secret merger remain entirely unconfirmable at this time.
Due to the lack of physical evidence, the witness's account of the event is considered unconfirmable by the investigators.
Synonyms
unverifiable indemonstrable unprovable unsubstantiable unauthenticated