What is the Latin word for unauthenticated?

The usual Latin words for “unauthenticated” are incertus, rūmor. The right choice depends on the sense; see the distinctions below.

English → Latin

“unauthenticated” in Latin

incertusuncertain, doubtful, not sure, unsure; not knowing, doubting (said of persons); not known, obscure (said of things)rūmorrumor, hearsay, gossip; the voice of the people, the common opinion; (also) fame, reputation; rustle, murmur, a murmurin

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

unauthenticated

sine auctore (e.g., rumores) satis quidem constantes, sed adhuc sine auctore: incertus. To believe any unauthenticated report, levem auditionem habere pro re comperta (Caes.).

Quick answer

What is the Latin word for unauthenticated?: The usual Latin words for “unauthenticated” are incertus, rūmor. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.