NEPI (anc. Nepet or Nepete), a town and episcopal see of Italy, in the province of Rome, 72 m.
Nepet had become Roman before 386 B.C., when Livy speaks of it and Sutrium as the keys of Etruria.
The position of Sutri was important, commanding as it did the road into Etruria, the later Via Cassia; and it is spoken of by Livy as one of the keys of Etruria, Nepet being the other.
With Nepet and ten other Latin colonies it refused further help in the Hannibalic War in 209 B.C. Its importance as a fortress explains, according to Festus, the proverb Sutrium ire, of one who goes on important business, as it occurs in Plautus.