cooperation
/koʊˌɑ.pəˈɹeɪ.ʃən/noun
cooperation is spelled C-O-O-P-E-R-A-T-I-O-N. The wrong spelling people search most is coorperation: about 40 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 60 of all searches for the word. Cooperation is a noun meaning “The act of cooperating”. The plural of cooperation is cooperations or coöperations.
How many letters and syllables are in cooperation?
| Letters | 11: C-O-O-P-E-R-A-T-I-O-N |
|---|---|
| Syllables | 5 (from its American pronunciation) |
| In writing | 20 times per million words; the 4,302nd most frequent word form |
| Wrong spellings searched | 1; the most searched, coorperation, about 40 Bing searches a month (all of them) |
| Pairs people search | |
| Rhymes with |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026); rhymes and same-letter words are computed by PlainSpell from its own word list.
How do you spell cooperation?
Cooperation is spelled C-O-O-P-E-R-A-T-I-O-N. One wrong spelling is searched or written often enough to measure; together they are about 1 in 60 of the searches for cooperation in either form.
Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.
How common is cooperation?
Cooperation appears 20 times per million words in written English, the 4,302nd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce cooperation?
- UK /kəʊˌɒp.əˈɹeɪ.ʃən/
- British /kəˌwɔpəˈɹɛjʃ(ə)n/
- US /koʊˌɑ.pəˈɹeɪ.ʃən/
Cooperation has 5 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Berrely-cooperation.wav, LL-Q1860_(eng)-Wodencafe-cooperation.wav, Wikimedia Commons (author and licence on each file's page).
Words people confuse with cooperation
Word pairs people search, with the monthly searches for “a vs b” (G: Google, B: Bing, United States).
Also written: co-operation (one word or two).
Sources: Google and Bing searches (September 2025 to August 2026, through DataForSEO); English Wiktionary (homophones, alternative spellings).
What rhymes with cooperation?
The 12 most written words on PlainSpell end in the same sounds as cooperation from its last stressed vowel (/eɪʃən/):
- situation
- association
- population
- administration
- operation
- organization
- application
- location
- generation
- foundation
- conversation
- investigation
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of cooperation
- cooperations plural
- co-operation
- coöperation
- coöperations plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does cooperation mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The act of cooperating.
- 2
Active help from a person, organization, etc., such as an orderly sharing of space or resources.
- 3
Association for mutual benefit, such as for purposes of production or purchase.
noun
- 1
Dated spelling of cooperation.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Cooperation in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | coopération , coopérative |
| German | Zusammenarbeit, Kooperation, Mitarbeit |
| Portuguese | cooperação |
| Spanish | cooperación |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does cooperation come from?
First attested in 1620–1630. Borrowed from French cooperation, from Late Latin cooperātiō. By surface analysis, co- + operation or cooperate + -ion.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What to look up after cooperation
- co-operation or cooperation? the difference
- situation rhymes with cooperation
- association rhymes with cooperation
- cooperate the entry before
- cooperative the entry after
- English words starting with C the most written first
- The most misspelled English words
- Count the syllables of any word
- Check the spelling of a text