Etymologically

principal

Etymology and origin of the English word principal

Confidence
Established
Formation
Borrowing
First attested
c. 1290
Borrowed from
Old French principal via Middle English
Ultimate origin
Latin (principalis)

Pronunciation

  • IPA: /ˈprɪn.sə.pəl/[1]

Etymology

It is inherited from Middle English principal, borrowed from Old French principal (“main, most important; princely”),[2][3] and directly from Latin prīncipālis (“first in importance, original”),[2][3][4] from prīnceps, prīncipis “first man, chief, ruler”,[2][3] from prīmus “first” and the root of capere “to take”,[2] from Proto-Indo-European *kap- (“to grasp”).[2] It is related to prince, principle and prime.[3][5]

Earliest recorded meaning

Chief, main, most important: about 1290 of things and 1297 of persons in the OED,[6] about 1300 in Barnhart and Etymonline.[3][2] The noun, a chief man or leading representative, is also from about 1300.[2][3]

Semantic evolution

In law a principal was from about 1300 one who takes the leading part in an action.[2] A ruler or governor is from the mid-14th century, and the head of a college or hall from the mid-15th century.[2] The person in charge of a school is from 1827, in American English.[2][3] A main sum of money, the money on which interest is paid, is from the early 15th century (1430–1431 in Barnhart).[2][3] The leading actor in a play is from the 16th century,[5] and the pantomime principal boy from 1893.[6]

Timeline

  • c. 1290 – chief, main, of things.[6]
  • c. 1300 – noun, chief man; in law, a main party.[2]
  • mid-14th century – a ruler.[2]
  • 1430–31 – a sum lent at interest.[3]
  • mid-15th century – head of a college.[2]
  • 1827 – head of a school.[2][3]
  • 1893 – principal boy.[6]

Modern meaning

Adjective

  1. Most important; main or chief.

Noun

  1. The head of a school or college.
  2. A leading performer in a play, opera or ballet.
  3. A sum of money lent or invested, on which interest is paid.
  4. (law) A person for whom an agent acts, or the main person responsible for a crime.
  5. A main participant in a situation.

Word family

  • principally
  • principalship
  • subprincipal
  • principal ideal
  • principal ideal domain
  • principal quantum number

Usage notes

Principal and principle are often confused but share no meanings.[7] Principle is only a noun, mostly meaning a basic truth or rule, while principal is both a noun and an adjective, the adjective meaning “chief, leading”.[7]

References

  1. ^ Jones, Daniel (2011), Cambridge English Pronouncing Dictionary, 18th ed., ed. Peter Roach, Jane Setter and John Esling, Cambridge: Cambridge University Press
  2. ^ a b c d e f g h i j k l m n o Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g h i j Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  5. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  6. ^ a b c d Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ a b The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin

Related etymologies

Cite this entry

“Principal.” Etymologically, 16 Oct. 2026, etymologically.com/en/principal. Accessed 16 Oct. 2026.

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