Etymologically

Etymology and origin of the Latin word probatus

Confidence
Established
Formation
Derivation
First attested
170–c. 90 BC, Accius
Ultimate origin
Proto-Indo-European (*pro-bʰ(h₂)u-o-)

Forms

probātus (feminine probāta, neuter probātum, comparative probātior, superlative probātissimus); first/second-declension adjective[1]

Etymology

It is the participle of probō (“to approve, test”), used as an adjective.[1][2][3] The verb is from probus (“good, upright”), which de Vaan derives from Proto-Italic *pro-f(w)-o- (“favourable”) and Proto-Indo-European *pro-bʰ(h₂)u-o-, cognate with Sanskrit प्रभु (prabhú, “excelling”).[4]

Earliest recorded meaning

The OLD's earliest quotation is Accius: “to be approved by the good rather than by the many”.[1]

Semantic evolution

It is regarded with approval, of good repute or esteemed, as Cicero's steady and esteemed life and his orator who is not only acceptable but approved.[1] With a dative it is acceptable or pleasing to someone, as in an old prayer quoted by Macrobius asking that the city be more acceptable to the gods.[1]

In medieval Latin it is “worthy of credit”.[5]

Timeline

  • 170–c. 90 BC – Accius of being approved by the good.[1][3]
  • 81–43 BC – Cicero of an esteemed life and an approved orator.[1][3]
  • 1st half of the 5th century AD – Macrobius quotes an old prayer.[1][3]

Meanings

Adjective

  1. Approved, of good repute, esteemed.[1][2]
  2. Acceptable, pleasing to.[1]
  3. (Medieval Latin) Worthy of credit, trustworthy.[5]

References

  1. ^ a b c d e f g h i j Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  2. ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  3. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
Cite this entry

“Probatus.” Etymologically, 19 Oct. 2026, etymologically.com/la/probatus. Accessed 19 Oct. 2026.

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