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Free Dictionary API

The Free Dictionary API provides developers free access to detailed definitions, pronunciations, synonyms, and example sentences, ideal for language applications.

Developed by Meet Developer

Live API
99.90%Uptime
200msLatency
6kStars
No AuthAuth
NoCredit Card
RESTStyle
2Version

Reference

API Endpoints

Endpoints

Available routes, request structures, and code examples.

Get definitions, pronunciations, and examples for English words

Endpoint URL
https://api.dictionaryapi.dev/api/v2/entries/en/{word}
Code Example
curl -X GET 'https://api.dictionaryapi.dev/api/v2/entries/en/{word}'
Request Payload
{
  "word": "hello"
}
Expected Response
{
  "word": "hello",
  "meanings": [
    {
      "definitions": [
        {
          "definition": "A greeting."
        }
      ],
      "partOfSpeech": "noun"
    }
  ],
  "phonetic": "həˈləʊ"
}
Version:v2
Limit:Unlimited

Integration

Quick Start

cURL ExampleREST
curl -X GET "https://api.dictionaryapi.dev/api/v2/api/v2/entries/en/example"

Docs

Technical Documentation

What this API does

The Free Dictionary API is a RESTful service that supplies extensive English language data. It provides definitions, phonetic transcriptions, audio pronunciations, synonyms, antonyms, and example sentences structured in JSON format. This API facilitates immediate access for developers without the need for signup or the use of API keys.

How it works

Developers can access the API via HTTP GET requests to retrieve various language data. The API supports requests for definitions, phonetics, and synonyms in a straightforward manner, returning all data in JSON format. This enables easy integration into apps or services aimed at language learning and educational use.

Authentication

No authentication is required to access the Free Dictionary API. It is publicly accessible, allowing developers to utilize its features without needing API keys.

Example usage

  • /api/v2/entries/en/{word} - Retrieves definitions and phonetics for the specified English word.
  • /api/v2/synonyms/{word} - Provides synonyms for the specified word.
  • /api/v2/antonyms/{word} - Returns antonyms for the specified word.
  • /api/v2/pronunciation/{word} - Fetches audio pronunciation for the specified word.

Limits

The Free Dictionary API does not impose any rate limits. Developers can make requests freely without restrictions.

Ideal use cases

  • Integrating dictionary features into educational applications.
  • Developing language learning tools for mobile or web.
  • Creating chatbots or voice assistants with language capabilities.
  • Building online resources for vocabulary enhancement.

Examples

Real-World Applications

  • Building dictionary apps for learners of English.
  • Creating educational platforms that require real-time word lookups.
  • Enhancing language learning chatbots with vocabulary data.
  • Integrating pronunciation guides into e-learning tools.
  • Developing writing assistants with synonym and antonym suggestions.

Evaluation

Advantages & Limitations

Advantages
  • ✓ No signup or API key required, enabling instant access.
  • ✓ Unlimited requests with no rate limiting.
  • ✓ Supports multiple languages and detailed phonetic and audio data.
  • ✓ Clean and easy-to-parse JSON responses for quick integration.
  • ✓ Open source and actively maintained by Meet Developer.
Limitations
  • ✗ Limited to dictionary data; no advanced NLP features.
  • ✗ No official SDKs, requiring manual API integration.
  • ✗ No authentication means less control over usage monitoring.
  • ✗ Lacks advanced search or filtering capabilities.

Support

Frequently Asked Questions

Important Notice

Verify Before You Decide

Last verified · Apr 30, 2026

The details on this page — including pricing, features, and availability — are based on our last review and may not reflect the provider's current offering. Providers update their products frequently, sometimes without prior notice.

What may have changed

Pricing Plans
Features & Limits
Availability
Terms & Policies

Always visit the official provider website to confirm the latest pricing, terms, and feature availability before subscribing or integrating.

Check official site

External Resources

Documentation Official Website Pricing Details Postman Collection

API Specifications

2
Pricing Model
Free
Credit Card
Not Required
Response Formats
JSON
Supported Languages
9 Languages
SDK Support
REST Only
Rate Limit

No rate limits

Time to Hello World

Minutes to integrate

Free Tier

100% free usage with no limits or signup required.

Best For

Developers building educational and language-focused applications needing fast, reliable dictionary data.

Not Ideal For

Applications requiring secure, authenticated access or advanced linguistic analysis.

Tags

#phonetics#synonyms#definitions#no-auth#free-api#audio#dictionary#education

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