thesaurus
nounUK /θɪˈsɔːrəs/
US /θɪˈsɔːrəs/
A thesaurus is a book that helps you find words with the same or similar meaning.
She used a thesaurus to find a better word for 'happy'.
RELATED WORDS
OTHER MEANINGS
2. A storehouse or treasury of knowledge or information.
The library is a thesaurus of facts about the town's history.
3. A list of terms used in a particular field, such as medicine or computing.
The medical thesaurus groups diseases by body system.
4. In computing, a feature that suggests alternative words or phrases.
The search engine's thesaurus offered related terms for the query.