Etymologically

transpire

Etymology and origin of the English word transpire

Pronunciation

  • IPA: /tɹænˈspaɪə(ɹ)/ (UK); /tɹænˈspaɪɚ/ (US)[1]

Etymology

It is borrowed from Middle French transpirer,[2][3][4][5][6] from Medieval Latin transpirare,[2][5][6] from Latin trans- (“through”) + spiro (“to breathe”).[2][3][4][5][6] Barnhart treats it partly as a back-formation from transpiration.[3] It is related to spirit and perspire.[4]

Earliest recorded meaning

To pass off or give off as vapour through pores (1597).[3][4][5][7]

Semantic evolution

Figuratively the word came to mean to leak out, become known (1741),[3][4] a use Johnson disliked as a needless import from French.[4] The sense “to happen, take place” followed by 1755–75,[3][4] probably from a misunderstanding of the “become known” sense.[3][1] Plants were said to transpire water through their leaves from the 17th century.[1][5]

Timeline

  • before 1425 – transpiracioun, exhalation.[3]
  • 1597 – to give off as vapour.[3][5][7]
  • 1741 – to become known.[3][4]
  • 1755 – to happen.[3]

Modern meaning

Verb

  1. To become known; to come to light.
  2. To happen or occur.
  3. To give off water vapour, as through the pores of the skin or the stomata of leaves.

Word family

  • transpirable
  • untranspired
  • transpiration
  • perspire
  • respire
  • spirit

Usage notes

The American Heritage Dictionary notes that transpire “become known” was first objected to as a Gallicism but has long been standard,[2] while transpire “happen” has been criticized for over a century as pretentious and unetymological;[2] in its Usage Panel survey acceptance of this sense rose from 38 to 58 percent.[2] Wiktionary similarly notes that some critics discourage it though it has been common since the 19th century.[1]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
  3. ^ a b c d e f g h i j k Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
  4. ^ a b c d e f g h Harper, Douglas, Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c d e f Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b c Random House Webster's Unabridged Dictionary (1999), 2nd ed., New York: Random House
  7. ^ a b Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

Cite this entry

“Transpire.” Etymologically, 11 Oct. 2026, etymologically.com/en/transpire. Accessed 11 Oct. 2026.

Last edited on . ·