Etymologically

Etymology and origin of the English word assessor

Confidence
Established
Formation
Borrowing
First attested
c. 1380 Wyclif, Works More words from the 14th century
Borrowed from
Old French assessour via Middle English
Ultimate origin
Proto-Indo-European *sed-

Pronunciation

  • UK: /əˈsɛsə/[1]
  • US: /əˈsɛsɚ/[1]

Etymology

It is inherited from Middle English assessour,[2][3][4] borrowed from Old French assessour[5][4][6] and directly borrowed from Latin assessor (“assistant, assistant judge; in Late Latin, one who assesses taxes”).[7][2][3] The Anglo-Norman assessour, recorded from 1280, could already mean both an official who fixes a tax and an assistant judge.[8] The Latin noun means literally "one who sits by", and is the agent noun from assessus, past participle of assideō (“to sit beside; to assist a judge”),[7][3][4] from ad- (“to”) and sedeō (“to sit”), from Proto-Indo-European *sed- (“to sit”).[7] The modern French form is assesseur;[5][7] compare Spanish asesor and Italian assessore.[5] Assess goes back to the same Latin verb, and Etymonline dates it to the early 15th century, later than this noun.[7]

Earliest recorded meaning

An assistant or adviser to a judge or magistrate: about 1380, in Wyclif's Works.[5] Before 1387 Trevisa's translation of Higden has assessour for the Latin word, of a man learned in law who advised an emperor.[2]

Semantic evolution

The word came in with the Latin legal sense, an adviser sitting beside a judge,[7][5] which survives for specialists who advise a court on technical matters.[9][3] The sense "one who assesses taxes" was present in Late Latin and Anglo-Norman,[7][8] but the OED first finds it in English in Cotgrave's dictionary of 1611,[5] while the Shorter Oxford dates it to late Middle English.[6] Milton returned to the literal Latin sense in Paradise Lost (1667), calling the Son "Th' Assessor of his Throne".[7][6] Johnson (1755) listed one who sits by another, generally assisting the judge; one next in dignity; and one who lays taxes.[10] The official who values property or income for taxation is recorded from 1845,[5] and since the mid 19th century the word was used generally of anyone who makes evaluations.[6] Today it can also be a person who marks work done for a course, in Britain,[9] or one who estimates insurance damage.[9][3]

Timeline

  • c. 1380 – an assistant or adviser to a judge or magistrate.[5]
  • 1611 – a person who assesses taxes.[5][7]
  • 1667 – a person who sits beside another or shares another's rank, in Milton.[5][7]
  • 1845 – a person who officially values property or income for taxation.[5]
  • mid 19th century – a person who makes evaluations in general.[6]

Meanings

Noun

  1. A person who values property or income for taxation.[9][3][5]
  2. A person who judges the merit of something, especially, in Britain, work done for a course of study.[9][6]
  3. A person who estimates damage to property for insurance purposes, in Britain an insurance adjuster.[9][3]
  4. A person with special knowledge who assists a judge or magistrate or advises a court.[9][3][5]
  5. (archaic) A person who sits beside another, or who shares another's rank or office.[3][6][10]

Word family

  • assessorial
  • assessorship

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Kurath, Hans; Kuhn, Sherman M.; Lewis, Robert E., eds. (1952–2001), Middle English Dictionary, Ann Arbor: University of Michigan Press; online edition ed. Frances McSparran et al. (2000–2018)
  3. ^ a b c d e f g h i Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  4. ^ a b c Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  5. ^ a b c d e f g h i j k l m Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  6. ^ a b c d e f g Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  7. ^ a b c d e f g h i j Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  8. ^ a b Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  9. ^ a b c d e f g Collins English Dictionary (2023), Glasgow: HarperCollins
  10. ^ a b Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.

Related etymologies

Cite this entry

“Assessor.” Etymologically, 5 Nov. 2026, etymologically.com/en/assessor. Accessed 6 Nov. 2026.

Last edited on . ·