- Confidence
- Established
- Formation
- Borrowing, Onomatopoeia
- First attested
- c. 1240
- Inherited from
- Middle English cuccu
Pronunciation
- IPA: /ˈkʊkuː/ (UK); /ˈkuku/ (US)[1]
Etymology
It is inherited from Middle English cuccu, cokkou,[2][3][4][5] borrowed from or influenced by Old French cucu, cocu (“cuckoo; cuckold”) (modern French coucou),[3][4][6][7] imitating the call of the male bird.[2][3][4][5] Compare Ancient Greek κόκκυξ (kókkux), Latin cucūlus, Sanskrit कोकिल (kokila), Middle Irish cúach and Welsh cog, all imitative.[4][7][8][9] The Old English name of the bird was Old English ġēac, cognate with Old Norse gaukr and German Gauch (“fool”).[4][10]
Earliest recorded meaning
The bird Cuculus canorus, named after the male's mating call (c. 1240 in the OED; before 1300 in Barnhart; c. 1300 in Etymonline), and its call (c. 1240).[11][3][4] It appears as a surname, Kuku, in 1191.[3]
Semantic evolution
By 1581 the word was applied to a person, especially a foolish one, with reference to the bird's monotonous call or its habit of laying eggs in other birds' nests.[11][3][4] An unwelcome intruder is a cuckoo in the nest (early 17th century).[12] The verb, to repeat incessantly like the cuckoo's call, dates from 1648,[11][5] and the adjective, “of or like a cuckoo”, from 1627.[3][5] The slang adjective “crazy” is American, from 1918.[11][3][4] The word cuckold also comes from the bird.[12][13]
Timeline
- 1191 – the surname Kuku.[3]
- c. 1240 – the bird and its call.[11]
- 1581 – a foolish person.[11][3]
- 1627 – adjective, of or like a cuckoo.[3][5]
- 1648 – verb, to repeat incessantly.[11][5]
- 1918 – adjective, crazy (American slang).[11][3]
Modern meaning
Noun
- A greyish European bird, Cuculus canorus, with a two-note call, which lays its eggs in the nests of other birds.
- Any bird of the family Cuculidae, such as the roadrunner.
- The call of the cuckoo, or an imitation of it.
- (informal) A foolish or crazy person.
Verb
- To repeat over and over, as the cuckoo does its call.
- To make the call of the cuckoo.
Adjective
- (informal) Lacking in sense; foolish or crazy.
Word family
- cloud-cuckoo-land
- cuckooflower
- cuckoo clock
- yellow-billed cuckoo
- cuckoo spit
- black-billed cuckoo
- cuckoo wasp
Related words
- cuckold
- coccyx
- gowk
References
- ^ Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b 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 l 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
- ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
- ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
- ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
- ^ Skeat, Walter W. (1911), A Concise Etymological Dictionary of the English Language, new ed., Oxford: Clarendon Press
- ^ Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
- ^ a b c d e f g h Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
- ^ a b Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
- ^ Partridge, Eric (1966), Origins: A Short Etymological Dictionary of Modern English, 4th ed., London: Routledge & Kegan Paul
Cite this entry
“Cuckoo.” Etymologically, 12 Oct. 2026, etymologically.com/en/cuckoo. Accessed 12 Oct. 2026.
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