thesaurus
C1Formal or academic, common in writing and educational contexts.
Definition
Meaning
A reference work that lists words grouped together according to similarity of meaning, typically containing synonyms and sometimes antonyms.
Can refer to any collection of words or terms arranged by meaning, including in computing for information retrieval systems, or metaphorically as a rich source of vocabulary.
Linguistics
Semantic Notes
Often confused with a dictionary; a dictionary defines words, while a thesaurus organizes them by meaning. It can be used figuratively to denote a comprehensive collection of terms.
Dialectal Variation
British vs American Usage
Differences
Pronunciation differs slightly; British English typically has /θɪˈsɔːrəs/ with clearer stress on the second syllable, while American English uses /θəˈsɔrəs/ with a schwa in the first syllable. Spelling and meaning are identical.
Connotations
Similar in both varieties, associated with enhancing vocabulary, writing, and academic work.
Frequency
Equally common in formal, academic, and writing contexts in both UK and US English; less frequent in casual everyday speech.
Vocabulary
Collocations
Grammar
Valency Patterns
noun + for + gerund (e.g., thesaurus for writing)verb + thesaurus (e.g., browse a thesaurus)thesaurus + of + language (e.g., thesaurus of English)Vocabulary
Synonyms
Strong
Neutral
Weak
Usage
Context Usage
Business
Rarely used; may appear in professional writing or documentation to avoid repetition.
Academic
Commonly used in linguistics, literature, writing courses, and research papers for lexical analysis.
Everyday
Used when discussing writing, vocabulary improvement, or word games; understood by most speakers.
Technical
In computing, refers to a thesaurus used in information retrieval, natural language processing, or search engines.
Examples
By CEFR Level
- I found a new word in the thesaurus.
- The thesaurus helps me write better.
- She used a thesaurus to avoid repeating the same adjective in her story.
- An online thesaurus is quick and easy to access.
- Writers often rely on a thesaurus to enhance the variety and precision of their language.
- The thesaurus provided several alternatives for the term, improving the essay's clarity.
- Linguists utilize a thesaurus to examine semantic fields and lexical relationships in corpus analysis.
- Advanced thesauruses incorporate antonyms and related concepts for comprehensive language study.
Learning
Memory Aids
Mnemonic
Think of 'thesaurus' as a 'treasure' chest of synonyms, helping you find word treasures.
Conceptual Metaphor
Often metaphorized as a map, network, or treasure trove of words, emphasizing organization and richness.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Direct loanword 'тезаурус' is used but may be less familiar in everyday Russian; avoid confusing with 'словарь' which primarily means dictionary.
- Be aware that Russian may use 'синонимический словарь' for clarity.
Common Mistakes
- Misspelling as 'thesarus' or 'thesorous'.
- Confusing with a dictionary, using it for definitions instead of synonyms.
Practice
Quiz
What is the primary function of a thesaurus?
FAQ
Frequently Asked Questions
A dictionary provides definitions, pronunciations, and etymologies, while a thesaurus lists synonyms, antonyms, and related words grouped by meaning.
Yes, many modern thesauruses include antonyms alongside synonyms to offer a fuller range of word choices, though their primary focus is on synonyms.
It is more frequent in written and academic contexts, but most English speakers understand it and may use it when discussing writing or vocabulary.
In American English, it is typically pronounced as /θəˈsɔrəs/, with the stress on the second syllable and a schwa sound in the first.
Explore