1. not supported by evidence or testimony; not verified or confirmed
2. not having any recorded examples of use
Usage: linguistics

Examples

• The claim remains unattested by any reliable witnesses.
• Many ancient languages contain unattested words that scholars can only guess at.
• The historian dismissed the unattested account as unreliable.
• Several unattested forms of the verb appear in theoretical reconstructions.
• The story is completely unattested in contemporary sources.
• Linguists often debate the meaning of unattested vocabulary.