incredibilis

From in- +‎ crēdibilis.

• (Classical Latin) IPA^(key): [ɪŋ.kreːˈdɪ.bɪ.lɪs]
• (modern Italianate Ecclesiastical) IPA^(key): [iŋ.kreˈd̪iː.bi.lis]

incrēdibilis (neuter incrēdibile, adverb incrēdibiliter); third-declension two-termination adjective

1. unbelievable, incredible
   • 63 BCE, Cicero, Catiline Orations Oratio in Catilinam Prima in Senatu Habita.7:

     Num mē fefellit, Catilīna, nōn modo rēs tanta, tam atrōx, tamque incrēdibilis, vērum — id quod multō magis est admīrandum — diēs?

     Was I mistaken, Catiline, in not only a matter so important, so atrocious, and so incredible, but also — that which must be admired all the more — the very day?
     (That is, Cicero had announced an open revolt by an accomplice of Catiline.)

Third-declension two-termination adjective.

• “incredibilis”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
• “incredibilis”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers
• "incredibilis", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• “incredibilis”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.
• Carl Meißner; Henry William Auden (1894), Latin Phrase-Book‎^[1], London: Macmillan and Co.
  • it sounds incredible: incredibile dictu est