Wiktionary (US: /ˈwɪkʃənɛri/ WIK-shə-nerr-ee, UK: /ˈwɪkʃənəri/ ; rhyming with "dictionary") is a multilingual, -based project to create a of terms (including , , , , etc.) in a large number of and a number of . These entries may contain , for illustration, , , , usage examples, , related terms, and of terms into other languages, among other features. It is by volunteers via a . is a of the words and . It is available in 198 languages and in . Like its sister project , Wiktionary is run by the , and is written collaboratively by , dubbed "Wiktionarians". Its , , allows almost anyone with access to the website to create and edit entries.
For the English Wiktionary itself, see en.wiktionary.org. For Wikipedia's guideline about Wiktionary, see Wikipedia:Wikimedia sister projects.
Because Wiktionary is not limited by print space considerations, most of Wiktionary's language editions provide definitions and translations of terms from many languages, and some editions offer additional information typically found in thesauri.
Where Wiktionary leads. Every connection below has a source: a link in this article, a shared Wikipedia category, or CirrusSearch text similarity. Articles already on your trail are left out.
Wiktionary was brought online on December 12, 2002,2 following a proposal by Daniel Alston and an idea by Larry Sanger, co-founder of Wikipedia.3 On March 28, 2004, the first non-English Wiktionaries were initiated in French and Polish. Wiktionaries in numerous other languages have since been started. Wiktionary was hosted on a temporary domain name (wiktionary.wikipedia.org) until May 1, 2004, when it switched to the current domain name.a As of July 2021, Wiktionary features over 30 million articles (and even more entries) across its editions.4 The largest of the language editions is the English Wiktionary, with over 7.5 million entries, followed by the French Wiktionary with over 4.7 million and the Malagasy Wiktionary with over 3.5 million entries. Forty-three Wiktionary language editions contain over 100,000 entries each.b
The use of bots to generate large numbers of articles is visible as "growth spurts" in this graph of article counts at the largest eight Wiktionary editions. (Data as of December 2009)
Many of the definitions in the project's largest language editions were created by bots that found creative ways to generate entries or (rarely) automatically imported thousands of entries from previously published dictionaries. Seven of the 18 bots registered at the English Wiktionary in 2007c created 163,000 of the entries there.5
Another bot, "ThirdPersBot", was responsible for the addition of a number of third-person conjugations that would not have received their own entries in standard dictionaries; for instance, it defined "smoulders" as the "third-person singular simple present form of smoulder." Of the 1,269,938 definitions the English Wiktionary provides for 996,450 English words, 478,068 are "form of" definitions of this kind.6 This means that even without such entries, its coverage of English is significantly larger than that of major monolingual print dictionaries. Merriam-Webster's Third New International Dictionary, for instance, has 475,000 entries (with many additional embedded headwords); the Oxford English Dictionary has 615,000 headwords, but includes Middle English as well, for which the English Wiktionary has an additional 34,234 gloss definitions. Detailed statistics exist to show how many entries of various kinds exist.
The English Wiktionary does not rely on bots to the extent that some other editions do. The French and Vietnamese Wiktionaries, for example, imported large sections of the Free Vietnamese Dictionary Project (FVDP), which provides free content bilingual dictionaries to and from Vietnamese.d These imported entries make up virtually all of the Vietnamese edition's contents. Like the English edition, the French Wiktionary has imported approximately 20,000 entries from the Unihan database of CJK characters. The French Wiktionary grew rapidly in 2006 thanks in a large part to bots copying many entries from old, freely licensed dictionaries, such as the eighth edition of the Dictionnaire de l'Académie française (1935, around 35,000 words), and using bots to add words from other Wiktionary editions with French translations. The Russian edition grew by nearly 80,000 entries as "LXbot" added boilerplate entries (with headings, but without definitions) for words in English and German.7
As of July 2021, the English Wiktionary has over 791,870 gloss definitions and over 1,269,938 total definitions (including different forms) for English entries alone, with a total of over 9,928,056 definitions across all languages.8
Logos
Wiktionary has historically lacked a uniform logo across its numerous language editions. Some editions use logos that depict a dictionary entry about the term "Wiktionary", based on the previous English Wiktionary logo, which was designed by Brooke Vibber, a MediaWiki developer.9 Because a purely textual logo must vary considerably from language to language, a four-phase contest to adopt a uniform logo was held at the Wikimedia Meta-Wiki from September to October 2006.e Some communities adopted the winning entry by the user known as "Smurrayinchester", a 3×3 grid of wooden tiles, each bearing a character from a different writing system. However, the poll did not see as much participation from the Wiktionary community as some community members had hoped, and a number of the larger wikis ultimately kept their textual logos.e
In April 2009, the issue was resurrected with a new contest. This time, a depiction by "AAEngelman" of an open hardbound dictionary won a head-to-head vote against the 2006 logo, but the process to refine and adopt the new logo then stalled.10 In the following years, some wikis replaced their textual logos with one of the two newer logos. In 2012, 55 wikis that had been using the English Wiktionary logo received localized versions of the 2006 design by "Smurrayinchester".f In July 2016, the English Wiktionary adopted a variant of this logo.11 As of 4 July 2016, 135 wikis, representing 61% of Wiktionary's entries, use a logo based on the 2006 design by "Smurrayinchester", 33 wikis (36%) use a textual logo, and three wikis (3%) use the 2009 design by "AAEngelman".12
Multi-lingual
As of November 2026, there are Wiktionary sites for 198 languages of which 173 are active and 25 are closed.1 The active sites have 52,465,260 articles, and the closed sites have 339 articles.13 There are 8,024,409 registered users of which 9,290 are recently active.13
Top ten Wiktionary language projects by mainspace article count13
Early critical reception of Wiktionary was mixed. In 2006, Jill Lepore wrote in the article "Noah's Mark" for The New Yorker,15
There's no show of hands at Wiktionary. There's not even an editorial staff. "Be your own lexicographer!", might be Wiktionary's motto. Who needs experts? Why pay good money for a dictionary written by lexicographers when we could cobble one together ourselves? Wiktionary isn't so much republican or democratic as Maoist. And it's only as good as the copyright-expired books from which it pilfers.
Is there a place for Wiktionary? Undoubtedly. The industry and enthusiasm of its many creators are proof that there's a market. And it's wonderful to have another strong source to use when searching the odd terms that pop up in today's fast-changing world and the online environment. But as with so many Web sources (including this column), it's best used by sophisticated users in conjunction with more reputable sources.
References in other publications are fleeting and part of larger discussions of Wikipedia, not progressing beyond a definition, although David Brooks in The Nashua Telegraph described it as "wild and woolly".16 One of the impediments to independent coverage of Wiktionary is the continuing confusion that it is merely an extension of Wikipedia.
There are several parsers for different Wiktionary language editions:25
DBpedia Wiktionary :26 a subproject of DBpedia, the data are extracted from English, French, German, and Russian Wiktionaries; the data includes language, , definitions, and translations. The declarative description of the , and are used in order to extract information.
gIn this citation, the author refers to Wiktionary as part of the Wikipedia site: Adapted from an article by Naomi DeTullio (2006). "Wikis for Librarians" (PDF). NETLS News #142. Northeast Texas Library System. p. 15. Archived from (PDF newsletter) on June 5, 2007. Retrieved April 21, 2007.
The measure of correctness of the inflections for a subset of the Polish words in the English Wiktionary showed that this grammatical data is very stable (a study showed that only 131 out of 4,748 Polish words have had their inflection data corrected).17
As of 2016, Wiktionary has seen growing use in academia.18 In the February 2024 edition of Nature, the relation between CEFR vocabulary level and user interest in English Wiktionary entries has been assessed.19
JWKTL (Java Wiktionary Library) :30 provides access to English Wiktionary and German Wiktionary dumps via a Java Wiktionary API.31 The data includes language, parts of speech, definitions, quotations, semantic relations, etymologies and translations. JWKTL is distributed under the Apache License.
wikokit :32 the parser of English Wiktionary and Russian Wiktionary.33 The parsed data includes language, parts of speech, definitions, quotations,34i semantic relations35 and translations. This is a multi-licensedopen-source software.
Construction of machine-readable dictionary by the parser NULEX, which integrates open linguistic resources: English Wiktionary, WordNet, and VerbNet.38 The parser NULEX scrapes English Wiktionary for tense information (verbs), plural form and parts of speech (nouns).
Speech recognition and synthesis, where Wiktionary was used to automatically create pronunciation dictionaries.39 Word-pronunciation pairs were retrieved from 6 Wiktionary language editions (Czech, English, French, Spanish, Polish, and German). Pronunciations are in terms of the International Phonetic Alphabet.j The ASR system based on English Wiktionary has the highest word error rate, where each third phoneme has to be changed.41
Text simplification. Medero & Ostendorf45 assessed vocabulary difficulty (reading level detection) with the help of Wiktionary data. Properties of words extracted from Wiktionary entries (definition length and POS, sense, and translation counts) were investigated. Medero & Ostendorf expected that
(1) very common words will be more likely to have multiple parts of speech,
(2) common words will be more likely to have multiple senses,
(3) common words will be more likely to have been translated into multiple languages. These features extracted from Wiktionary entries were useful in distinguishing word types that appear in Simple English Wikipedia articles from words that only appear in the Standard English comparable articles.
A page called "Wikidata:Lexicographical data" was started in 2018 to provide structured data support to Wiktionaries. It stores word data of all languages in a machine readable data model, under a dedicated "Lexeme" namespace in Wikidata. As of October 2021, the project has amassed over 600,000 lexeme entries of various languages.48
iQuotations are extracted only from Russian Wiktionary.34
jIf there are several IPA notations on a Wiktionary page – either for different languages or for pronunciation variants, then the first pronunciation was extracted.40
16David Brooks, "Online, interactive encyclopedia not just for geeks anymore, because everyone seems to need it now, more than ever!" The Nashua Telegraph (August 4, 2004)
Hellmann, S.; Auer, S. (2013). "Towards Web-Scale Collaborative Knowledge Extraction" (PDF). In Gurevych, Iryna; Kim, Jungi (eds.). The People's Web Meets NLP. Theory and Applications of Natural Language Processing. Springer-Verlag. pp. 287–313. ISBN 978-3-642-35084-9. Archived (PDF) from the original on October 27, 2014. Retrieved May 10, 2013.
Krizhanovsky, Andrew (2010). "Transformation of Wiktionary entry structure into tables and relations in a relational database schema". arXiv:1011.1368 [cs].
Krizhanovsky, Andrew (2010). "The comparison of Wiktionary thesauri transformed into the machine-readable format". arXiv:1006.5040 [cs].
Li, Shen; Graça, Joao V.; Taskar, Ben (2012). "Wiki-ly supervised part-of-speech tagging" ( (PDF)). Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning. Jeju Island, Korea: Association for Computational Linguistics. pp. 1389–1398. Archived from the original on May 22, 2013. Retrieved May 10, 2013.
Lin, Feiyu; Krizhanovsky, Andrew (2011). "Multilingual ontology matching based on Wiktionary data accessible via SPARQL endpoint". Proc. of the 13th Russian Conference on Digital Libraries RCDL'2011. Voronezh, Russia. pp. 19–26. arXiv:1109.0732. Bibcode:2011arXiv1109.0732L.
McFate, Clifton J.; Forbus, Kenneth D. (2011). "NULEX: an open-license broad coverage lexicon" (PDF). The 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies, Proceedings of the Conference. Portland, Oregon, US: The Association for Computer Linguistics. pp. 363–367. ISBN 978-1-932432-88-6. Archived (PDF) from the original on October 11, 2017. Retrieved May 10, 2013.
Otte, Pim; Tyers, F. M. (2011). "Rapid rule-based machine translation between Dutch and Afrikaans" ( (PDF)). In Forcada, Mikel L.; Depraetere, Heidi; Vandeghinste, Vincent (eds.). 16th Annual Conference of the European Association of Machine Translation, EAMT11. Leuven, Belgium. pp. 153–160. Archived from the original on February 25, 2021. Retrieved May 10, 2013.
Smirnov A, Levashova T, Karpov A, Kipyatkova I, Ronzhin A, Krizhanovsky A, Krizhanovsky N (2012). "Analysis of the quotation corpus of the Russian Wiktionary". Research in Computing Science. 56: 101–112. arXiv:2002.00734. doi:10.13053/rcs-56-1-11. S2CID10726045.
2,832 revisions in total · 1,621 contributors · 0 / −79 bytes across 1 edits by 1 contributor in the last 30 days
ZahrazamedahmediAltered template type. Add: magazine, authors 1-1. Removed URL that duplicated identifier. Removed parameters. Some additions/deletions were parameter name changes. | Use this tool. Report bugs. | #UCB_Gadget−79diff
Vaniliyana von HalwmOnly edited typos here. Just a note to add: I feel like I am terribly addicted to Wiktionary. For the admins there, I'm genuinely sorry and I really want to change and I really want to change the way how I do research. I'm not a kid anymore, I'm 19. I know that an apology alone won't cut it, I have to walk the talk, but I don't want to feel like I'm stalk anyone so I'll stop here.+4diff
Natural language processing (NLP) is the processing of natural language information by a computer. NLP is a subfield of computer science and is closely associated with artificial intelligence.
A constructed language or conlang is a language for communication between humans (i.e. not with or between computers) which, unlike most languages that naturally emerge from human interaction, is devised by a person or group for a particular purpose.
The World Wide Web (also known as WWW, W3, or simply the Web) is a global interconnected information system that enables content sharing over the Internet.
Basic English (a backronym for British Academic Scientific International and Commercial English) is a controlled language based on standard English, but with a greatly simplified vocabulary and grammar.
Wiki software (also known as a wiki engine or a wiki application) is collaborative software that runs a wiki, which allows the users to create and collaboratively edit pages or entries via a web browser.
A natural language or ordinary language is any spoken language or signed language used organically in a human community, first emerging without conscious premeditation, replicating across generations…
Wikipedia is a free online encyclopedia written and maintained by a community of volunteer editors, known as Wikipedians, through open collaboration and the wiki software MediaWiki.
Dictionary developed by Noah Webster and other dictionaries using his name
Webster's Dictionary is any of the American English dictionaries edited in the early 19th century by American lexicographer Noah Webster (1758–1843), as well as numerous related or unrelated dictionaries that have adopted Webster's name in his honor.
