The story
- New Latin · borrowed fromin vīnō vēritās
- English todayin vino veritas
Borrowed from New Latin in vīnō vēritās (literally “in wine there is truth”), from in (“in”) + vīnō, the ablative singular of vīnum (“wine”) + vēritās (“truth”). While various classical writers in both Greek and Latin make similar statements, the form in vino veritas is from the 16th-century humanist Erasmus, and is first attested in English writing soon afterwards in the same century.
Etymology from Wiktionary, CC BY-SA 4.0.