authentic Copy link Outline 1. certus2. vērus3. rătus4. authentĭcus (freq. in late Latin, esp. legal)5. fīdē dignus.6. gĕnŭīnus • authentic: 1. certus: to write all a. news, omnia c. perscribere, Cic.: a most a. proof of my affection, amoris mei signum certissimum, Cic. 2. vērus: a perfectly a. letter, verissimae literae, Cic.: v. true, real. 3. rătus: a. wills, r. testamenta, Cic. 4. authentĭcus (freq. in late Latin, esp. legal): an a. will, a. testamentum, Ulp. 5. fīdē dignus. 6. gĕnŭīnus: v. genuine.