cooperation

/kəʊˌɒp.əˈɹeɪ.ʃən/

//kəʊˌɒp.əˈɹeɪ.ʃən// noun

By · According to Wiktionary data (CC BY-SA) ·

"cooperation" is a 11-letter English headword indexed on PlainSpell.

The verdict

“cooperation” is a regularly-used English word, ranked #4,292 in English word frequency and used as a noun.

#4,292
frequency rank, English
11
letters
16
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The act of cooperating.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

cooperation vs corporation
82% similar
cooperation vs cooperative
82% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for cooperation
PropertyValue
Headwordcooperation
LanguageEnglish
Part of speechNoun
IPA/kəʊˌɒp.əˈɹeɪ.ʃən/
Letters11
Frequency rank#4,292
Misspellings tracked16
Confusable pairs2
SourceWiktionary (kaikki.org)

Where “cooperation” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). cooperation lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for cooperation is 11 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /kəʊˌɒp.əˈɹeɪ.ʃən/. Corpus data places it at rank #4,292 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 16 likely wrong-spelling variants for cooperation, with forms such as "ccooperation", "cooepration", and "coopeartion". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 2 confusable-pair relationships, "corporation", "cooperative", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: First attested in 1620–1630. Borrowed from French cooperation, from Late Latin cooperātiō. By surface analysis, co- + operation or cooperate + -ion. The correct English form is cooperation, spelled C-O-O-P-E-R-A-T-I-O-N.

Definition

  1. 1
    The act of cooperating.
  2. 2
    Active help from a person, organization, etc., such as an orderly sharing of space or resources.
  3. 3
    Association for mutual benefit, such as for purposes of production or purchase.

Etymology

First attested in 1620–1630. Borrowed from French cooperation, from Late Latin cooperātiō. By surface analysis, co- + operation or cooperate + -ion.

Antonyms

competition

This word in other languages

cooperación(Español)coopération(Français)Zusammenarbeit(Deutsch)

Common misspellings

Also misspelled as: ccooperation,cooepration,coopeartion,cooperaiton,cooperasion,cooperatino,cooperationn,cooperatoin,cooperattion,cooperration,coopertaion,coopperation,coopreation,coperation,copoeration,ocoperation

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of cooperation - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

ccooperation1cooepration2coopeartion2cooperaiton2cooperasion1cooperatino2cooperationn1cooperatoin2
Edit distance from "cooperation"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "cooperation"?
"cooperation" is spelled C-O-O-P-E-R-A-T-I-O-N. The IPA pronunciation is /kəʊˌɒp.əˈɹeɪ.ʃən/.
What does "cooperation" mean?
As a noun, "cooperation" means: The act of cooperating.
What words are commonly confused with "cooperation"?
"cooperation" is commonly confused with "corporation", "cooperative". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "cooperation"?
The IPA (International Phonetic Alphabet) transcription for "cooperation" is /kəʊˌɒp.əˈɹeɪ.ʃən/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "cooperation"?
First attested in 1620–1630. Borrowed from French cooperation, from Late Latin cooperātiō. By surface analysis, co- + operation or cooperate + -ion. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “cooperation”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is C-O-O-P-E-R-A-T-I-O-N - every other letter order is a misspelling in standard orthography.
  • Say it as /kəʊˌɒp.əˈɹeɪ.ʃən/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “corporation” - see the side-by-side comparison. cooperation vs corporation
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list