Unattested [adjective]

● Unidentified

● Unnamed

● Undisclosed

● Nameless

● Incognito

● Pseudo

● Pseudonymous

● Secret

● Unspecified

● Unsigned

● Jane/John Doe

● X

● Innominate

● So and so

● Such and such

● Unacknowledged

● Unavowed

● Unclaimed

● Uncredited

● Undesignated

● Whatchamacallit

● Whatsis

● You know who

● Identified

● Named

● Known

● Unattested

● Unwitnessed

● Codicil

● Nonextant

● Heteroclitic

● Extant

● Heteroclite

● Attest

● Dead language

● Elamitic

● Attestive

● Old church slavonic

● Genitival

● Alpha privative

● Unaltered

● Subject case

● Contradictable

● Classical latin

● Extancy

● Ghost word

● Heteroclitical

● Archaic

● Preterient

● Vulgar latin

● Preterimperfect

● Acyrology

● Inscriptive

● Old slavonic

● Late latin

● Unverifiable

● Protogenic

● Loan translation

● Old persian

● Possessive case

● Cacographic

● Common noun

● Genitive case

● Old bulgarian

● Protomorphic

● Old latin

● Basic english

● Unconfirmed

● Indisputableness

● Unrecorded

● Low latin

● Faliscan

● Semiproof

● Dog latin

● Traducible

● Mass noun

● Nonexistent

● Heterographic

● Derivably

● Blot out

● Falsary

● Onym

● Artificial language

● Vocative case

● Early modern english

● Traduct

● Concrete noun

● Latinly

● Transdialect

● Authenticness

● Old low german

● Effaceable

● Cognate

● Nominative case

● Grammatical case

● Cunabula

● Contemporaneous

● Uncontrovertible

● Incontrovertibleness

● Parachronistic

● Vernaculous

● Imperfect

● Isonym

● Verifiable

● Old french

● Pehlevi

● Demonstrative pronoun

● Confutable

● Modern english

● Proofless

● Refragable

● Equative

● Unoriginated

● Biblical latin

● Italic language

● Verbal noun

● Infallibleness

● Disvouch

● Medieval latin

● Comprobation

● Ancestral

● Mental object

● Sound law

● Illegible

● Church slavic

● Paronymous