Etymologically
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diaper

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Pronunciation

  • UK: /ˈdaɪ(ə).pə/[1]
  • US: /ˈdaɪ(ə).pəɹ/[1]

Etymology

It is inherited from Middle English diapre,[2][3][4] borrowed from Anglo-Norman diapere and Middle French diapre,[5] variants of diaspre, earlier Old French diaspre (“silken fabric richly decorated with a floral or geometrical pattern”), recorded from the late 12th century.[5][6][7] This is from Medieval Latin diasprum, also diaspra, a noun use of the adjective diasprus (9th century),[5][3][8] probably from Byzantine Greek δίασπρος (díaspros),[5][6][9] from Ancient Greek δια- (dia-, “through, thoroughly”) and ἄσπρος (áspros, “white”).[5][10][8][11] According to Etymonline and Ayto, áspros began as Latin asper (“rough”), was applied to the raised parts of coins, came to mean a silver coin in Byzantine Greek; the shine of the coins then made it an adjective for white.[10][9] The Greek compound may have meant "white at intervals", on the model of διάλευκος (diáleukos, “white-speckled”), or "pure white".[5][12] The OED and Klein also report a derivation of the Latin word from iaspis, the source of jasper;[5][4] the OED favours the Greek, since early French and Latin texts link the cloth with Constantinople and Antioch.[5] The verb, first diapren,[10] is formed from the noun, compare diasprer and diaprer.[5][13]

Earliest recorded meaning

A costly woven fabric with a repeated pattern: about 1330, in the romance Sir Degare in the Auchinleck manuscript;[5][6] Etymonline gives the mid-14th century, describing a silk fabric of one colour with a pattern of the same colour woven in.[10]

Semantic evolution

Before the 15th century the word seems to have meant a rich silk fabric, sometimes woven with gold thread; by the 16th century it was used of white linen with a small diamond pattern.[9][12][11] From such cloth came towels and napkins: the OED records that sense from Shakespeare's Taming of the Shrew (before 1616) to 1858.[5][10] Babies' nappies were first made of pieces of this fabric, which gave the modern sense;[11][12] ODE and Ayto date it to the late 16th century,[11][9] while the OED's first quotation is from 1810[5] and Etymonline dates it to 1837, adding that it became common in the 20th century.[10] In Britain napkin and nappy came to prevail for babywear, while American English kept diaper.[12][14] The pattern senses grew alongside: in heraldry from 1610, in architecture and decoration from 1826, and for the patterned ground of a fabric from 1813.[5] The verb, to decorate with such a pattern, is recorded in Chaucer's Knight's Tale (c. 1385),[5][10] and in North America it came to mean putting a diaper on a baby, from 1886 in the OED[5] and 1951 in Etymonline.[10] In African American slang diaper was also a sanitary napkin.[15]

Timeline

  • c. 1330 – a woven fabric with a repeated pattern.[5][6]
  • c. 1385 – verb, to decorate with a repeated pattern, in Chaucer.[5][10]
  • before 1616 – a towel or napkin of such fabric (obsolete by 1858).[5]
  • 1610 – in heraldry, a repeated pattern covering a shield.[5]
  • 1810 – a cloth wrapped round a baby's bottom.[5]
  • 1826 – in architecture and decoration, a repeated surface pattern.[5]
  • 1875 – a cloth pad worn during menstruation (now rare).[5]
  • 1886 – verb, to put a diaper on a baby.[5]

Meanings

Noun

  1. (chiefly North American) A piece of absorbent cloth or disposable material folded around a baby's bottom and between its legs; a nappy.[14][3][5]
  2. A woven pattern of small repeated figures, especially diamonds, in fabric; also a fabric, usually linen or cotton, with such a pattern.[14][3][5]
  3. Such a repeated pattern used to decorate a flat surface, in architecture or heraldry.[14][5]
  4. (obsolete) A towel or napkin of diaper fabric.[5][3][7]

Verb

  1. To put a diaper on a baby, or to change its diaper.[3][5][8]
  2. To decorate with a small repeated pattern.[14][3][5]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  3. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  4. ^ a b 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 n o p q r s t u v w x y z 27 28 29 Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  6. ^ a b c d Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  7. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  8. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  9. ^ a b c d Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
  10. ^ a b c d e f g h i Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  11. ^ a b c d Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  12. ^ a b c d Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  13. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  14. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins
  15. ^ Green, Jonathon (2010), Green's Dictionary of Slang, London: Chambers; digital ed. 2016–, https://greensdictofslang.com