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
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