Opiter (/ˈoʊpɪtər/ or /ˈɒpɪtər/) is a Latin praenomen, or personal name, which was used primarily during the early centuries of the Roman Republic.
SAUFIO L. L." may be interpreted as "Opiter Saufeius, freedman of Lucius," although Chase felt that the praenomen was probably Oppius.
[7][8] The short treatise, De Praenominibus ("Concerning Praenomina", of uncertain authorship, but usually appended to Valerius Maximus), mentions a popular etymology of Opiter, deriving it from avus (grandfather) and pater (father).
Chase argues that avus cannot reasonably have contributed to the name, nor does he find any evidence for pater.
[3][10][7] If Chase is correct, then Opiter is probably derived from the same root as the names of the plebeian gentes Opimia and Opisia, and may be the Latin cognate of the Oscan praenomen Oppius or Oppiis, as well as gens Oppia.