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
- To become known; to come to light.
- To happen or occur.
- To give off water vapour, as through the pores of the skin or the stomata of leaves.
Word family
- transpirable
- untranspired
- transpiration
Related words
- 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
- ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
- ^ 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
- ^ a b c d e f g h Harper, Douglas, Online Etymology Dictionary, https://www.etymonline.com
- ^ a b c d e f Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
- ^ a b c Random House Webster's Unabridged Dictionary (1999), 2nd ed., New York: Random House
- ^ 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 . ·