Etymologically

Etymology and origin of the Latin word precario

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Proto-Indo-European (*preḱ-)

Forms

precāriō (not comparable); adverb[1]

Etymology

It is from Latin precārius (“obtained by entreaty”) + -ō.[1][2] De Vaan lists it under prex, which he traces to Proto-Italic *prek- and Proto-Indo-European *preḱ- (“question”), comparing Sanskrit प्राश् (prā́ś-, “dispute, questioning”).[3]

Earliest recorded meaning

De Vaan dates it from Plautus,[3] in the prologue of whose Amphitruo the speaker has been told to ask the audience a favour gently and with kind words.[1]

Semantic evolution

It is first like a suppliant, by entreaty.[1] It also means by request or as a favour, on sufferance: an inscription says that a private road may be used by permission.[1] From this comes the sense uncertainly, precariously: the elder Seneca says his memory now obeys him only precariously.[1] Köbler dates it from Tacitus and finds it in early medieval formularies.[2]

Timeline

  • c. 250–184 BC – Plautus of asking a favour.[1][3][2]
  • 98–115 AD – Tacitus.[2]

Meanings

Adverb

  1. Like a suppliant, by entreaty.[1]
  2. By request, as a favour, on sufferance.[1]
  3. Uncertainly, precariously.[1]

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 c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  3. ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
Cite this entry

“Precario.” Etymologically, 20 Oct. 2026, etymologically.com/la/precario. Accessed 20 Oct. 2026.

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