dictionary

dic·tion·a·ry
D2I1C3T1I1O1N1A1R1Y4
UK/ˈdɪk.ʃə.nə.ɹi/UK/ˈdɪk.ʃən.ɹi/UK/ˈdɪkʃ.nə.ɹi/US/ˈdɪk.ʃəˌnɛ.ɹi/

noun

A reference work listing words or names from one or more languages, usually ordered alphabetically, explaining each term's meanings or senses, often also containing information on its etymology, pronunciation, usage, semantic relations, translations, as well as other relevant information.

“a law dictionary”

Very commonFirst used c. 1480Scrabble 16

Meanings

dictionary1

noundictionary (plural dictionaries)

plural dictionaries · alternative obsolete dictionnary · alternative obsolete pronunciation spelling dixnary

  1. A reference work listing words or names from one or more languages, usually ordered alphabetically, explaining each term's meanings or senses, often also containing information on its etymology, pronunciation, usage, semantic relations, translations, as well as other relevant information.First known use c. 1480

    If you want to know the meaning of a word, look it up in the dictionary.

    1 more example

    But what other kind(s) of syntactic information should be included in Lexical Entries? Traditional dictionaries such as Hornby's (1974) Oxford Advanced Learner's Dictionary of Current English include not only categorial information in their entries, but also information about the range of Complements which a given item permits (this information is represented by the use of a number/letter code).

    1988, Andrew Radford, chapter 7, in Transformational grammar: a first course, Cambridge, UK: Cambridge University Press, page 339
    1. preceded by theA synchronic dictionary of a standardised language held to only contain words that are properly part of the language.

      Look it up in the dictionary, and what do you find?

      1930, Norman Lindsay, chapter 6, in Redheap, Sydney, N.S.W.: Ure Smith, →OCLC, section I, page 106
      1 more example

      By 1986 the name Walkman was included as a word in the English dictionary.

      2019, John Hughes, Life Pre-Intermediate Student's Book, National Geographic Learning, page 188
    2. broadlyA reference work on a particular subject or activity in which the entries are arranged alphabetically; an alphabetical encyclopedia.

      a law dictionary

      1 more example

      a dictionary of sports

  2. figurativelywith of or a possessiveThe collection of words used or understood by a particular individual.First known use 1570s

    Synonyms: lexicon, vocabulary

  3. figurativelySomeone or something regarded as a repository or compendium of information.First known use 1730s

    walking dictionary

  4. computingAn associative array; a data structure where each value is referenced by a particular key, analogous to words and definitions in a dictionary (noun sense 1).First known use 1950s

    User calls RouteCollection.GetVirtualPath, passing in a RequestContext, a dictionary of values, and an optional route name used to select the correct route to generate the URL.

    2011, Jon Galloway, Phil Haack, Brad Wilson, Professional ASP.NET MVC 3
verbdictionary (third-person singular simple present dictionaries, present participle dictionarying, simple past and past participle dictionaried)

present singular third person dictionaries · participle present dictionarying · participle past dictionaried · past dictionaried · alternative obsolete dictionnary · alternative obsolete pronunciation spelling dixnary

  1. transitiveTo look up in a dictionary.
  2. transitiveTo add to a dictionary.

    Should I use a word that a lot of people use but isn't in the dictionary? Uncle Phil would rather get a root canal than say he was scrapbooking, because the word isn't dictionaried.

    2001, The Michigan Alumnus, page 25
    1 more example

    By a reference to the following dictionaried abbreviations, the simplicity and harmony of each sentence will be manifestly apparent; although it does not embrace everything, and could not, as it would be far too voluminous for general use.

    1866, William Henry Ward, The international day, night, and fog signal telegraph, page 12
  3. intransitiverareTo compile a dictionary.

    They [dictionary-makers] may have had their romance at home—may have been crossed in love, and thence driven to dictionarying; may have been involved in domestic tragedies—who can say?

    1864 September 28, “The Alphabeticals”, in Blackwood's Edinburgh Magazine, volume 96, number 587, Edinburgh: William Blackwood, page 334, column 2

Dictionary2

proper noun
  1. Nickname for a swot or studious person, or one who uses needlessly complicated words.

    His friends called him "Dictionary." There were other names they called him that were far worse.

    1993, Fred Hartley, That Morals Thing, page 31
    3 more examples

    He won a scholarship to a prestigious British inspired secondary school, Government College in Umuahia, and also gained a reputation for knowledge in his home village, where they called him Dictionary.

    1996, Kirk H. Beetz, Beacham's Encyclopedia of Popular Fiction

    Hillis Brown turned toward Simon and whispered, "Hey, DICtionary^([sic]), don't worry, just because you sing like Johnny doesn't mean you gotta be a faggot."

    2002, Bart Schneider, Secret Love, page 67

    Meanwhile, he applied himself so diligently to his formal education that schoolmates called him “Dictionary.” This effort won him admission to a British-run boarding school with an excellent library.

    2013, Bridgette Kasuka, African Writers, page 404

Synonyms & antonyms

nounThe collection of words used or understood by a particular individual.

More synonyms by meaning

nouna reference book containing an alphabetical list of words with information about them

Similar
Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

dictionary · noun, verb

  1. Proto-Indo-European*deyḱ-
  2. Proto-Indo-European*déyḱeti
  3. Proto-Italic*deikō
  4. Latindīcō
  5. Latindictiō
  6. Latindictiōnārius?
  7. Medieval Latindictiōnārium
  8. Middle Englishdixionare
  9. Englishdictionary

From Middle English dixionare, a learned borrowing from Medieval Latin dictiōnārium, from Latin dictiōnārius, from dictiō (“a speaking”), from dictus, perfect past participle of dīcō (“to speak”) + -ārium (“room, place”). By surface analysis, diction + -ary.

Full word history & related roots →

Translations

Afrikaans woordeboek
  • woordeboekreference work of words and their meanings
Ancient Greek λέξεις, λεξικόν
  • λέξεις (léxeis)reference work of words and their meanings
  • λεξικόν (lexikón)reference work of words and their meanings
  • γλῶσσαι (glôssai)reference work of words and their meanings
Arabic قَامُوس, مُعْجَم
  • قَامُوس (qāmūs)reference work of words and their meanings
  • مُعْجَم (muʕjam)reference work of words and their meanings
  • قاموس (qāmūs)reference work of words and their meanings
  • قاموس (gāmūs)reference work of words and their meanings
Basque hiztegi
  • hiztegireference work of words and their meanings
Bengali অভিধান, ডিকশনারী
  • অভিধান (obhidhan)reference work of words and their meanings
  • ডিকশনারী (ḍikośnari)reference work of words and their meanings
  • ডিকশনারি (ḍikośnari)reference work of words and their meanings
Bulgarian ре́чник
  • ре́чник (réčnik)reference work of words and their meanings
Catalan diccionari
  • diccionarireference work of words and their meanings
Chinese хуадян, цыдян
  • хуадян (huadian)reference work of words and their meanings
  • цыдян (cɨdian)reference work of words and their meanings
  • зыдян (zɨdian)reference work of words and their meanings
  • 詞典 /词典 (sû-tián)reference work of words and their meanings
  • 辭林 /辞林 (sû-lîm)reference work of words and their meanings
  • 字典 (lī-tián / jī-tián)reference work of words and their meanings
Chinese Cantonese 詞典 /词典, 字典
  • 詞典 /词典 (ci⁴ din²)reference work of words and their meanings
  • 字典 (zi⁶ din²)reference work of words and their meanings
Chinese Mandarin 詞典 /词典, 辭典 /辞典
  • 詞典 /词典 (cídiǎn)reference work of words and their meanings
  • 辭典 /辞典 (cídiǎn)reference work of words and their meanings
  • 字典 (zìdiǎn)reference work of words and their meanings
Czech slovník, vokabulář
  • slovníkreference work of words and their meanings
  • vokabulářreference work of words and their meanings
  • lexikonreference work of words and their meanings
Danish ordbog
  • ordbogreference work of words and their meanings
Dari لُغَتنَامَه, فَرْهَنْگ
  • لُغَتنَامَه (luġat-nāma)reference work of words and their meanings
  • فَرْهَنْگ (farhang)reference work of words and their meanings
  • وَاژَهنَامَه (wāža-nāma)reference work of words and their meanings
  • لُغَت (luġat)reference work of words and their meanings
  • قَامُوس (qāmūs)reference work of words and their meanings
  • فَرْهَنْگْنَامَه (farhangnāma)reference work of words and their meanings
  • کِتَابِ لُغَت (kitāb-i luġat)reference work of words and their meanings
Dutch woordenboek
  • woordenboekreference work of words and their meanings
Esperanto vortaro
  • vortaroreference work of words and their meanings
Estonian sõnaraamat, sõnastik
  • sõnaraamatreference work of words and their meanings
  • sõnastikreference work of words and their meanings
Finnish sanakirja
  • sanakirjareference work of words and their meanings
French dictionnaire, dico
  • dictionnairereference work of words and their meanings
  • dicoreference work of words and their meanings
German Wörterbuch, Wärterbüach
  • Wörterbuchreference work of words and their meanings
  • Wärterbüachreference work of words and their meanings
  • Wörterbuchreference work of words and their meanings
  • Läxikonreference work of words and their meanings
Greek λεξικό
  • λεξικό (lexikó)reference work of words and their meanings
Hawaiian puke wehewehe ʻōlelo
  • puke wehewehe ʻōleloreference work of words and their meanings
Hebrew מִלּוֹן
  • מִלּוֹן (milón)reference work of words and their meanings
Hindi शब्दकोश, कोश
  • शब्दकोश (śabdkoś)reference work of words and their meanings
  • कोश (koś)reference work of words and their meanings
  • डिक्शनरी (ḍikśanrī)reference work of words and their meanings
  • डिश्कनरी (ḍiśkanrī)reference work of words and their meanings
  • शब्दसंग्रह (śabdasaṅgrah)reference work of words and their meanings
  • शब्दवारिधि (śabdavāridhi)reference work of words and their meanings
  • अभिधान (abhidhān)reference work of words and their meanings
  • अभिधानमाला (abhidhānmālā)reference work of words and their meanings
  • लुग़त (luġat)reference work of words and their meanings
  • लुग़ात (luġāt)reference work of words and their meanings
  • फरहंग (pharhaṅg)reference work of words and their meanings
  • निघंटु (nighaṇṭu)reference work of words and their meanings
Hungarian szótár
  • szótárreference work of words and their meanings
Icelandic orðabók
  • orðabókreference work of words and their meanings
Indonesian kamus, bausastra
  • kamusreference work of words and their meanings
  • bausastrareference work of words and their meanings
  • logatreference work of words and their meanings
Iranian Persian لُغَتنامِه, فَرْهَنْگ
  • لُغَتنامِه (loġat-nâme)reference work of words and their meanings
  • فَرْهَنْگ (farhang)reference work of words and their meanings
  • واژِهنامِه (vâže-nâme)reference work of words and their meanings
  • لُغَت (loġat)reference work of words and their meanings
  • قاموس (ġâmus)reference work of words and their meanings
Irish foclóir
  • foclóirreference work of words and their meanings
Italian dizionario, lessico
  • dizionarioreference work of words and their meanings
  • lessicoreference work of words and their meanings
  • vocabolarioreference work of words and their meanings
Japanese 辞書, 字書
  • 辞書 (jisho)reference work of words and their meanings
  • 字書 (jisho)reference work of words and their meanings
  • 辞典 (jiten)reference work of words and their meanings
  • 字典 (jiten)reference work of words and their meanings
  • 字引 (jibiki)reference work of words and their meanings
Korean 사전, 자서
  • 사전 (sajeon)reference work of words and their meanings
  • 자서 (jaseo)reference work of words and their meanings
  • 자전 (jajeon)reference work of words and their meanings
  • 옥편 (okpyeon)reference work of words and their meanings
Latin dictiōnārium, lexicon
  • dictiōnāriumreference work of words and their meanings
  • lexiconreference work of words and their meanings
Latvian vārdnīca
  • vārdnīcareference work of words and their meanings
Lithuanian žodynas
  • žodynasreference work of words and their meanings
Malay kamus, buku katan
  • kamusreference work of words and their meanings
  • buku katanreference work of words and their meanings
  • bausasterareference work of words and their meanings
Māori pukapuka taki kupu, papakupu
  • pukapuka taki kupureference work of words and their meanings
  • papakupureference work of words and their meanings
  • tikinarereference work of words and their meanings
Norwegian Bokmål ordbok, leksikon
  • ordbokreference work of words and their meanings
  • leksikonreference work of words and their meanings
Polish słownik, leksykon
  • słownikreference work of words and their meanings
  • leksykonreference work of words and their meanings
  • dykcjonarzreference work of words and their meanings
  • mównikreference work of words and their meanings
  • wokabularzreference work of words and their meanings
Portuguese dicionário
  • dicionárioreference work of words and their meanings
Punjabi ਸ਼ਬਦਕੋਸ਼, ਡਿਕਸ਼ਨਰੀ
  • ਸ਼ਬਦਕੋਸ਼ (śabdakoś)reference work of words and their meanings
  • ਡਿਕਸ਼ਨਰੀ (ḍikśanarī)reference work of words and their meanings
  • ਅਭਿਧਾਨ (abhidhān)reference work of words and their meanings
Romanian dicționar, vorbar
  • dicționarreference work of words and their meanings
  • vorbarreference work of words and their meanings
Russian слова́рь, лексико́н
  • слова́рь (slovárʹ)reference work of words and their meanings
  • лексико́н (leksikón)reference work of words and their meanings
Scottish Gaelic faclair
  • faclairreference work of words and their meanings
Slovak slovník, lexikón
  • slovníkreference work of words and their meanings
  • lexikónreference work of words and their meanings
Spanish diccionario, tumbaburros
  • diccionarioreference work of words and their meanings
  • tumbaburrosreference work of words and their meanings
  • mataburrosreference work of words and their meanings
  • mataburroreference work of words and their meanings
  • amansaburrosreference work of words and their meanings
Swahili kamusi
  • kamusireference work of words and their meanings
Swedish ordbok
  • ordbokreference work of words and their meanings
Tagalog talatinigan, talahuluganan
  • talatiniganreference work of words and their meanings
  • talahulugananreference work of words and their meanings
  • diksyunaryoreference work of words and their meanings
  • diksiyonaryoreference work of words and their meanings
Tamil அகரமுதலி, அகராதி
  • அகரமுதலி (akaramutali)reference work of words and their meanings
  • அகராதி (akarāti)reference work of words and their meanings
  • நிகண்டு (nikaṇṭu)reference work of words and their meanings
Thai พจนานุกรม, ดิกชันนารี
  • พจนานุกรม (pót-jà-naa-nú-grom)reference work of words and their meanings
  • ดิกชันนารี (dìk-chan-naa-rîi)reference work of words and their meanings
  • ดิก (dìk)reference work of words and their meanings
  • ปทานุกรม (bpà-taa-nú-grom)reference work of words and their meanings
Turkish sözlük, lügat
  • sözlükreference work of words and their meanings
  • lügatreference work of words and their meanings
Ukrainian словни́к
  • словни́к (slovnýk)reference work of words and their meanings
Urdu لُغَت, ڈِکْشَنْری
  • لُغَت (luġat)reference work of words and their meanings
  • ڈِکْشَنْری (ḍikśanrī)reference work of words and their meanings
  • فَرْہَن٘گ (farhaṅg)reference work of words and their meanings
  • شَبْدَکوش (śabdakoś)reference work of words and their meanings
  • شَبْد کوش (śabd koś)reference work of words and their meanings
  • قامُوس (qāmūs)reference work of words and their meanings
  • مُعْجَم (mu'jam)reference work of words and their meanings
  • فَرْہَن٘گ نامَہ (farhaṅg nāma)reference work of words and their meanings
  • لُغَت نامَہ (luġat nāma)reference work of words and their meanings
Vietnamese từ điển, tự điển
  • từ điểnreference work of words and their meanings
  • tự điểnreference work of words and their meanings
Welsh geiriadur
  • geiriadurreference work of words and their meanings
Yiddish ווערטערבוך
  • ווערטערבוך (verterbukh)reference work of words and their meanings
Zulu isichazimazwi, isichazamazwi
  • isichazimazwireference work of words and their meanings
  • isichazamazwireference work of words and their meanings
  • idikishanelireference work of words and their meanings

Rhymes & wordplay

Rhymes with dictionary

All rhymes →

Anagrams

Cite this entry
APA

dictionary. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/dictionary

MLA

“dictionary.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/dictionary. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “dictionary,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/dictionary.

Source: dictionary on Wiktionary, CC BY-SA 4.0.