Etymologically
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apt

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Pronunciation

Etymology

It is inherited from Middle English apt,[2] borrowed from Latin aptus (“fitted, suited, appropriate”),[3][2][4][5] perhaps through Old French apte (“fitting, suitable”).[6][7][8] The Latin word is the past participle of apiō (“to fasten, attach”),[3][8][9][10][11] and was later used as the past participle of apīscor (“to reach, attain”).[6][12] Etymonline traces it to Proto-Indo-European *ap- (“to grasp, take, reach”),[7] and Barnhart compares Sanskrit आप्त (āptá, “skilled, fit”) and Hittite ēpmi (“I take”).[6][9][12] The same Latin source gave adapt, adept and inept, and with the prefix com- couple and copulation.[9][10]

Earliest recorded meaning

Inclined, disposed: the mid-14th century in Etymonline and about 1350 in Barnhart.[7][6] The Middle English Dictionary's first quotation is from Trevisa's translation of Bartholomaeus (before 1398), of a sapphire most "apte and able" for the fingers of kings, in the sense suited to a purpose.[2]

Semantic evolution

In the late 14th century apt meant suited or fitted to a purpose,[7][2] used of things and, by 1474, of people who were ready or fit;[3] both uses are now archaic.[3][4] From the 1560s it meant becoming or appropriate in itself,[7][3] and by 1600, in Shakespeare's A Midsummer Night's Dream, especially of words that fit what they express.[3] From 1528 it described a habitual tendency, of things likely or liable to do something and soon of people prone to it,[3] and the use as a plain synonym of "likely" is marked as American from 1904.[3] The sense "quick to learn" dates from 1535, in Coverdale's Bible.[3] A noun apt, a natural tendency, is recorded about 1400,[3] and a verb apt, to adapt or make fit, from 1545 to 1672.[3][13] In Irish English, apt could mean certain or sure.[14]

Timeline

  • c. 1350 – inclined, disposed.[6][7]
  • before 1398 – of things, suited to a purpose.[2]
  • c. 1400 – noun, a natural tendency (obsolete).[3]
  • 1474 – of persons, fit, prepared, ready (archaic).[3]
  • 1528 – of things, likely, liable.[3]
  • 1535 – quick to learn.[3]
  • 1545 – verb, to adapt (obsolete by 1672).[3]
  • 1563 – suitable, appropriate.[3][7]
  • 1600 – of language, apposite, expressive.[3]
  • 1904 – likely (US).[3]

Modern meaning

Adjective

  1. Exactly suitable for the situation; appropriate: That was an apt description of the new building.
  2. Having a natural tendency; inclined: He is apt to lose his temper when he is tired.
  3. Likely: Prices are apt to rise before the holidays.
  4. Quick to learn or understand; clever: an apt pupil.
  5. (archaic) Prepared, ready.

Word family

  • aptly
  • aptness
  • overapt
  • unapt
  • inapt

Usage notes

Some usage guides hold that apt with an infinitive should only mean "inclined, disposed", but Dictionary.com notes that it is standard in all kinds of speech and writing as a synonym of likely, where only probability is meant.[15] It also distinguishes apt, particularly to the point, from pertinent, bearing on the matter in hand, and relevant, directly related and important to the subject.[15] In Irish English apt to could mean "sure to".[14]

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e 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 j k l m n o p q r s Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  4. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  6. ^ a b c d e Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  7. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  8. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  9. ^ a b c Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
  10. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  11. ^ Skeat, Walter W. (1911), A Concise Etymological Dictionary of the English Language, new ed., Oxford: Clarendon Press
  12. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  13. ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  14. ^ a b Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)
  15. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House