Etymologically

square

This is the current revision of this entry, as edited by bogdan on 15 October 2026 at 19:29. This address is a permanent link to this version.

Pronunciation

  • IPA: UK /skweə/, US /skwer/[1]

Etymology

The noun is inherited from Middle English squire, square,[2][3] borrowed from Old French esquire (“a square, squareness”), also esquarre,[4][2] from Vulgar Latin *exquadra, a back-formation from *exquadrāre (“to square”),[4][2] from ex- (“out”) and quadrāre (“to make square, set in order”),[4] from quadrus (“a square”),[4] related to quattuor (“four”),[2] from Proto-Indo-European *kwetwer- (“four”).[4] The adjective is from Old French esquarré, past participle of esquarrer “to square”, and the verb from esquarrer.[5][3]

Earliest recorded meaning

A tool for measuring or setting out right angles, a carpenter's square: about 1250 in Barnhart[2] and the mid-13th century in Etymonline;[4] the OED's first example is from before 1300.[6]

Semantic evolution

The noun came to mean a square shape or area by the late 14th century,[4][2] and the geometric figure and the number multiplied by itself from 1557.[6][2] A body of troops in square formation is from the 1590s.[4] An open space in a town is from 1687,[2] the 1680s in Etymonline,[4] and in the US a block of buildings bounded by four streets by 1867.[4] The tool gave the figurative sense of exactness and fairness: square, “honest, fair”, is by the 1560s,[4] and is behind fair and square (early 17th century) and square deal.[7] Square meal is by 1868, originally American.[4] The sense “old-fashioned, conventional” is from 1944, in American jazz slang, said to come from a conductor's hand movements in a regular four-beat rhythm.[4] Back to square one is from 1960, probably from board games.[4] The verb meant first to make square, of stone (late 14th century), then to regulate by a standard (1530s) and to balance accounts (1815).[4]

Timeline

  • c. 1250 – a carpenter's square.[2]
  • early 14th century – adjective, with four equal sides.[4]
  • late 14th century – verb, to make square.[4]
  • 1557 – square number; square root.[6]
  • 1560s – honest, fair.[4]
  • 1590s – a body of troops.[4]
  • 1687 – an open space in a town.[2]
  • 1868 – square meal.[4]
  • 1944 – old-fashioned, conventional.[4]
  • 1960 – square one.[4]

Modern meaning

Noun

  1. A flat figure with four equal sides and four right angles.
  2. An open space in a town, often with buildings on all sides.
  3. A T-shaped or L-shaped tool for drawing or checking right angles.
  4. (mathematics) The product of a number multiplied by itself.
  5. (slang) A person thought dull and conventional.

Adjective

  1. Having four equal sides and four right angles.
  2. Of a unit of area: square metre.
  3. Honest, fair: a square deal.
  4. With nothing owed on either side; even.
  5. (slang) Old-fashioned, conventional.

Verb

  1. To make square or rectangular.
  2. To multiply a number by itself.
  3. To bring into agreement; to settle or balance: square an account.

Word family

  • squarely
  • squareness
  • squarer
  • squarable
  • squarelike
  • squarehead
  • square-shouldered
  • square-toed

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 Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  4. ^ a b c d e f g h i j k l m n o p q r s t u v Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  6. ^ a b c Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press