Top Thesaurus APIs

List of Thesaurus APIs and similar web services that provide definitions, synonyms, and word associations.

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Thesaurus API

About thesaurus and synonym APIs

A thesaurus is a type of reference book similar to a dictionary. However, while a dictionary provides the definitions of words, a thesaurus allows users to look up synonyms, or words that share a similar meaning.

What is a thesaurus API?

Thesaurus APIs connect developers to existing data on word meaning and similarities, allowing them to provide this information to their own users.

How does a synonym API work?

APIs work by connecting services such as databases and websites (called “servers”) with third-party apps or websites (called “clients”).

When a client needs information about a synonym for a specific word, it will send a request to the server. The server will look up the information, and will then return it to the client.

For synonym lookup, this process can be entirely automated or it can be user-initiated, with the user of the client program purposefully requesting information about a word’s meaning and similar words.

Who are synonym and thesaurus APIs for?

This type of API can be very beneficial for developers of apps and websites that involve word processing.

For example, a blog platform developer can build in a synonym lookup tool that hooks into an existing thesaurus, allowing users to select alternative word choices and avoid being repetitive.

Why is a synonym API important?

APIs for synonym lookup save developers significant amounts of time, as developers can devote their attention to core functionality unique to their app instead of rebuilding tools that exist elsewhere.

Especially for dictionaries and thesauruses, there is a huge amount of effort that would have to be spent in finding word banks and developing the software to facilitate lookups and word meaning comparisons. APIs are a much better choice.

What can you expect from thesaurus and synonym APIs?

A number of these APIs are freemium services, meaning they offer basic services for free and more advanced functionality for a price. Additionally, some APIs in this area contain other word information, such as parts of speech and definitions, which allow them to more effectively find matches for client users.

Although the breadth of features is a positive for developers, it does mean they must do more research into which synonym or thesaurus API to use, as the options and tools in each differ widely.

Are there examples of free synonym and thesaurus APIs?

Best Thesaurus APIs

  1. WordsAPI
  2. WordProbe
  3. Synonyms
  4. Lingua Robot
  5. Words Association
  6. Word Dictionary
  7. SYSTRAN.io
  8. WikiSynonyms

Thesaurus API SDKs

All Thesaurus APIsare supported and made available in multiple developer programming languages and SDKs including:

  1. Node.js
  2. PHP
  3. Python
  4. Ruby
  5. Objective-C
  6. Java (Android)
  7. C# (.NET)
  8. cURL

Just select your preference from any API endpoints page.

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