Standard Lemma guide

thesaurus

noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /θɪˈsɔːɹəs/
  • British, Southern, Standard: /θɪˈsoːɹəs/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -ɔːɹəs
  • CMU ARPABET: TH AH0 S AO1 R AH0 S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A publication that provides synonyms (and sometimes antonyms and other semantic relations) for the words of a given language.

Definition source: English Wiktionary via Wiktextract

Examples

  • "Roget" is the leading brand name for a print English thesaurus that lists words under general concepts rather than just close synonyms.

Meaning relationships

Synonyms: synonymicon, wordhoard

Antonyms: none provided

2

noun

Meaning 2

A dictionary or encyclopedia.

Definition source: English Wiktionary via Wiktextract

Usage: archaic

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A hierarchy of subject headings: canonical titles of themes and topics, the titles serving as search keys.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, human-sciences, information-science, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

a book containing a classified list of synonyms

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: synonym finder

Antonyms: none provided

Broader terms: wordbook

Narrower terms: word finder, wordfinder

History

Etymology

16th century, borrowed from Latin thēsaurus, from Ancient Greek θησαυρός (thēsaurós, “storehouse, treasure”); its current English usage/meaning was established soon after the publication of Peter Roget's Thesaurus of English Words and Phrases in 1852. Doublet of treasure.

Across languages

Translations

99 source translations are retained for this English entry.

  • Arabic: مَكْنَز (maknaz) — book of synonyms
  • Armenian: հոմանիշների բառարան (homanišneri baṙaran) — book of synonyms
  • Armenian: թեզաուրուս (tʻezaurus) — book of synonyms
  • Armenian: հոմանիշարան (homanišaran) — book of synonyms
  • Bulgarian: синони́мен ре́чник (sinonímen réčnik) — book of synonyms
  • Catalan: diccionari de sinònims — book of synonyms
  • Chinese Mandarin: 同義詞詞典 /同义词词典 (tóngyìcí cídiǎn) — book of synonyms
  • Czech: tezaurus — book of synonyms
  • Danish: begrebsordbog — book of synonyms
  • Danish: saggruppeordbog — book of synonyms
  • Danish: tesaurus — book of synonyms
  • Danish: synonymordbog — book of synonyms
  • Dutch: thesaurus — book of synonyms
  • Dutch: synoniemenboek — book of synonyms
  • Dzongkha: མངོན་བརྗོད (mngon brjod) — book of synonyms
  • Esperanto: sinonimaro — book of synonyms
  • Esperanto: tezaŭro — book of synonyms
  • Faroese: samheitabók — book of synonyms
  • Finnish: synonyymisanakirja — book of synonyms
  • Finnish: käsitesanakirja — book of synonyms
  • French: dictionnaire des synonymes — book of synonyms
  • French: thésaurus — book of synonyms
  • French: dictionnaire de notions — book of synonyms
  • French: dictionnaire par ordre de matières — book of synonyms
  • Galician: dicionario de sinónimos — book of synonyms
  • Georgian: თეზაურუსი (tezaurusi) — book of synonyms
  • Georgian: სინონიმების ლექსიკონი (sinonimebis leksiḳoni) — book of synonyms
  • German: Thesaurus — book of synonyms
  • German: Begriffswörterbuch — book of synonyms
  • German: Sachgruppenwörterbuch — book of synonyms
  • German: Synonymwörterbuch — book of synonyms
  • Greek: θησαυρός (thisavrós) — book of synonyms
  • Hebrew: אֶגְרוֹן (egrón) — book of synonyms
  • Hindi: पर्यायकोश (paryāykoś) — book of synonyms
  • Hindi: समांतर कोश (samāntar koś) — book of synonyms
  • Hungarian: szinonimaszótár — book of synonyms
  • Hungarian: tézaurusz — book of synonyms
  • Hungarian: tematikus szókincstár — book of synonyms
  • Icelandic: hugtakaorðabók — book of synonyms
  • Ido: tezauro — book of synonyms
  • Indonesian: tesaurus — book of synonyms
  • Irish: stórchiste — book of synonyms
  • Italian: dizionario dei sinonimi — book of synonyms
  • Italian: tesoro — book of synonyms
  • Italian: tesauro — book of synonyms
  • Japanese: シソーラス (shisōrasu) — book of synonyms
  • Japanese: 類語辞典 (ruigo jiten) — book of synonyms
  • Khmer: កំរងវេវចនៈសព្ទ (kɑmrɑɑng veevĕəʼcaʼnaʼ sap) — book of synonyms
  • Korean: 유의어 사전 (yuuieo sajeon) — book of synonyms
  • Latvian: tēzaurs — book of synonyms
  • Lithuanian: tezauras — book of synonyms
  • Lithuanian: sinonimų žodynas — book of synonyms
  • Macedonian: тезаурус (tezaurus) — book of synonyms
  • Macedonian: синони́мен речник (sinonímen rečnik) — book of synonyms
  • Malay: tesaurus — book of synonyms
  • Māori: puna kupu taurite — book of synonyms
  • Māori: punakupu — book of synonyms
  • Norwegian Bokmål: begrepsordbok — book of synonyms
  • Norwegian Bokmål: begrepsklasseordbok — book of synonyms
  • Norwegian Bokmål: omgrepsordbok — book of synonyms
  • Norwegian Bokmål: omgrepsklasseordbok — book of synonyms
  • Norwegian Bokmål: tesaurus — book of synonyms
  • Norwegian Bokmål: synonymordbok — book of synonyms
  • Occitan: diccionari — book of synonyms
  • Polish: tezaurus — book of synonyms
  • Polish: słownik wyrazów bliskoznacznych — book of synonyms
  • Polish: słownik synonimów — book of synonyms
  • Portuguese: dicionário de sinónimos — book of synonyms
  • Portuguese: dicionário de sinônimos — book of synonyms
  • Portuguese: tesauro — book of synonyms
  • Portuguese: thesaurus — book of synonyms
  • Romanian: dicționar de sinonime — book of synonyms
  • Russian: теза́урус (tɛzáurus) — book of synonyms
  • Russian: слова́рь сино́нимов (slovárʹ sinónimov) — book of synonyms
  • Scottish Gaelic: co-fhaclair — book of synonyms
  • Serbo-Croatian: речник синонима — book of synonyms
  • Serbo-Croatian: теза̀урус — book of synonyms
  • Serbo-Croatian: rečnik sinonima — book of synonyms
  • Serbo-Croatian: tezàurus — book of synonyms
  • Sinhalese: සමාන පද නාමාවලිය (samāna pada nāmāwaliya) — book of synonyms
  • Slovak: tezaurus — book of synonyms
  • Spanish: diccionario de sinónimos — book of synonyms
  • Spanish: tesoro — book of synonyms
  • Swedish: begreppsordbok — book of synonyms
  • Swedish: begreppsklassordbok — book of synonyms
  • Swedish: tesaurus — book of synonyms
  • Swedish: synonymordbok — book of synonyms
  • Tagalog: talasimpanan — book of synonyms
  • Thai: อรรถาภิธาน (àt-tǎa-pí-taan) — book of synonyms
  • Tibetan: མངོན་བརྗོད་མཛོད (mngon brjod mdzod) — book of synonyms
  • Turkish: eşanlamlılar sözlüğü — book of synonyms
  • Turkish: tesarus — book of synonyms
  • Ukrainian: тезаурус (tezaurus) — book of synonyms
  • Welsh: thesawrws — book of synonyms
  • Catalan: tesaurus — information science: hierarchy of titles
  • Czech: tezaurus — information science: hierarchy of titles
  • Finnish: käsitesanakirja — information science: hierarchy of titles
  • Finnish: tesaurus — information science: hierarchy of titles
  • Russian: предме́тный указа́тель (predmétnyj ukazátelʹ) — information science: hierarchy of titles