Not yet proven to be true or verified by someone in authority; still uncertain.
Combines the prefix un- (not) with confirmed, from Latin confirmare meaning 'to make firm or sure.' The word emerged in English as a way to describe things lacking official verification or proof.
This word became especially common in news reporting—you'll notice journalists say 'unconfirmed reports' to protect themselves legally while still sharing information. It's actually a way language lets us talk about rumors responsibly.
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