unconfirmed
adj.adj. describing information that people think might be true but has not been proven yet. You use this when a story or fact lacks official proof.
adj. not yet verified or validated by an authoritative source. Often used in journalistic contexts to describe reports that lack official corroboration.
The news of the merger remains unconfirmed.
Despite several unconfirmed reports on social media, the police have not yet released the names of the suspects.
The editor decided to hold the story until the morning, as publishing unconfirmed rumors could damage the newspaper's reputation for accuracy and journalistic integrity.
From un- + confirmed.
Typically used as a predicative adjective after linking verbs like 'remain' or 'be', or as an attributive adjective before nouns like 'reports' or 'rumors'.