Etymologically

Etymology and origin of the Latin word assessor

Confidence
Established
Formation
Derivation
First attested
81–43 BC Cicero More words from the 1st century BC
Ultimate origin
Latin assideō
Etymology tree
inherited borrowed derived
Latin sedeō
Italian sedere
Spanish ser
Latin assideō
Latin assessor
English assessor
Spanish asesor
From the same root
English reside ← sedeō
Latin circumsedeō ← sedeō
Latin dēsideō ← sedeō
Latin dissideō ← sedeō
Latin īnsideō ← sedeō
Latin obses ← sedeō
Latin obsideō ← sedeō
Latin persedeō ← sedeō
Latin possideō ← sedeō
Latin praeses ← sedeō
Latin praesideō ← sedeō
Latin resideō ← sedeō
Latin sedīle ← sedeō
Latin sedimentum ← sedeō
Latin sēdō ← sedeō
Latin sessiō ← sedeō
Latin sessus ← sedeō
Latin subsidium ← sedeō
Latin supersedeō ← sedeō
Italian sedia ← sedere
Latin assiduus ← assideō

Pronunciation

  • Classical: [asˈsɛs.sɔr][1]
  • Ecclesiastical: [asˈsɛs.sor][1]

Forms

assessor m (genitive assessōris); third declension[1] Also spelled adsessor.[2][3]

Etymology

It is formed from Latin assideō (“to sit beside”) + -tor,[2][1] on the stem of the participle assessus; literally it is “one who sits beside”.[1][4]

Earliest recorded meaning

Cicero (81–43 BC) uses it of the augur whom the Spartans gave their kings as an adviser.[3][5]

Semantic evolution

Its general sense was a person who sits beside someone to advise him, a counsellor.[2][3] In legal language it became the assistant of a judge or magistrate, a sense found in Seneca, Suetonius and the Digest.[3][2] Augustine calls Christ the assessor of the Father, since he sits at the Father's right hand.[6]

In Late and Medieval Latin it was also a person who assessed taxes,[1][7][4] and Niermeyer records it as well for one who assigned an annuity, and for a rider.[7] English assessor was taken from it, partly through Old French, in the late 14th century, first for the assistant of a judge.[4]

Timeline

  • 81–43 BC – Cicero uses it of an augur who advised the Spartan kings.[3][5]
  • 4 BC–65 AD – Seneca uses it of a judge's assistant.[3][5]
  • 354–430 AD – Augustine calls Christ the assessor of the Father.[6][5]
  • late 14th century – English borrows it for a judge's assistant.[4]

Meanings

Noun

  1. One who sits beside another to advise him; a counsellor, aide.[2][3]
  2. (law) The assistant of a judge or magistrate, an assessor.[2][3]
  3. (Late Latin) An assessor of taxes.[1][7]
  4. (Medieval Latin) One who assigns an annuity.[7]
  5. (Medieval Latin) A rider.[7]

Word family

  • assessorius

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e f g h Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  7. ^ a b c d e Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill

Borrowed into

Cite this entry

“Assessor.” Etymologically, 7 Nov. 2026, etymologically.com/la/assessor. Accessed 8 Nov. 2026.

Last edited on . ·