impetuous

Etymology

It is inherited from Middle English impetuous,^[2][3] borrowed from Old French impetueux, also impetuos,^{[3][4][5][6][7]} and directly borrowed from Late Latin impetuōsus (“violent”).^[5][2][8] The OED records the French word from the 13th century,^[7] and Anglo-Norman impetuous from the first half of the 14th.^[9] The Latin adjective is from impetus (“attack, violent impulse”),^{[5][3][10][11]} from impetō (“to attack”),^[10][6][12] from in- (“against”) and petō (“to go towards, seek, attack”),^[10] from Proto-Indo-European *pet- (“to rush, to fly”).^[5] The OED notes that some early spellings suggest association with piteous.^[7]

Earliest recorded meaning

Of feelings, actions or people: acting with sudden, rash energy, or fierce and hot-tempered: 1398, in Trevisa's translation of Bartholomew de Glanville.^[7][5] The MED's first example is from a surgical text perhaps from before 1425, where a flow of blood is impetuous, glossed "hasty", translating Latin impetuōsus.^[2]

Semantic evolution

Ayto finds the idea behind the word in rushing at something with violence or aggression.^[10] English used it of temperament and also, from 1490 in Caxton, of physical things that move with great force, such as wind.^[7][5][13] Johnson (1755) still put the physical sense first, as "violent; forcible; fierce", with Prior on the Tiber's torrent, and then "vehement; passionate".^[14] The physical sense has since narrowed to poetic use,^[8] and the usual sense today is rash and impulsive.^[8][4]

Timeline

• 1398 – of feelings or people, vehement, violent, passionate.^[7][5]
• 1490 – of physical things, moving with great force.^[7][5]

Meanings

Adjective

1. Acting without thought; rash, impulsive; also of an act done in such haste: an impetuous proposal of marriage.^[8][4][13]
2. Sudden and vehement in feeling; ardent.^[4][7][13]
3. (poetic) Moving with great force or violence; rushing: impetuous floodwaters.^[8][7][13]

Word family

• impetuously
• impetuousness
• impetuosity

Related words

• impetus
• impetigo
• appetite
• compete
• perpetuate
• petition
• petulant
• repeat

Usage notes

Dictionary.com separates it from impulsive: both describe hasty action without thought, but impetuous suggests eagerness, violence and rashness, while impulsive stresses spontaneity and lack of reflection.^[15]

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c 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 The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
4. ^ a b c d Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
5. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
6. ^ a b Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
7. ^ a b c d e f g h i Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
8. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins
9. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
10. ^ 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
11. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
12. ^ Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
13. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
14. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
15. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House