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Words API

WordsAPI offers developers free access to comprehensive English word data, making it suitable for language applications and educational tools.

Developed by WordsAPI

Live API
99.90%Uptime
200msLatency
120Stars
No AuthAuth
NoCredit Card
RESTStyle
1.0Version

Reference

API Endpoints

Endpoints

Available routes, request structures, and code examples.

Returns a random word with definition

Endpoint URL
https://wordsapiv1.p.rapidapi.com/random
Code Example
curl -X GET 'https://wordsapiv1.p.rapidapi.com/random' \
  -H 'Authorization: Bearer YOUR_API_KEY'
Request Payload
{
  "hasDetails": "definitions"
}
Expected Response
{
  "word": "serendipity",
  "definition": "The occurrence of events by chance in a happy or beneficial way"
}
Version:v1
Limit:2500 requests/day

Integration

Quick Start

cURL ExampleREST
curl -X GET "https://wordsapiv1.p.rapidapi.com/words/words/example/definitions"

Docs

Technical Documentation

What this API does

WordsAPI is a RESTful API that provides detailed information on English words. It includes definitions, synonyms, antonyms, pronunciations, rhymes, syllable counts, and example sentences. This extensive word data is valuable for a variety of applications, including educational tools, writing assistants, and word games.

How it works

Developers can use HTTP GET requests to access various endpoints and retrieve structured JSON responses containing word data. This makes integration into applications straightforward, whether for web or mobile platforms. Common queries include fetching definitions, finding synonyms, or retrieving rhymes for given words.

Authentication

No authentication is required to use WordsAPI. Developers can access the API immediately without needing to obtain API keys or tokens, allowing for quick integration into applications.

Example usage

  • /words/{word}/definitions - Retrieves definitions for a specified word.
  • /words/{word}/synonyms - Returns synonyms for a given word.
  • /words/{word}/antonyms - Provides antonyms for the specified word.
  • /words/{word}/rhymes - Lists words that rhyme with the given word.
  • /words/{word}/pronunciation - Delivers pronunciation guides for the specified word.

Limits

Developers can make up to 2,500 requests per day for free via RapidAPI. This limit allows for substantial usage while exploring and integrating the API into projects.

Ideal use cases

  • Building word games like Scrabble or crosswords.
  • Creating writing assistance tools that suggest synonyms and antonyms.
  • Developing language learning applications.
  • Integrating word data into chatbots or educational platforms.

Examples

Real-World Applications

  • Developing educational apps for vocabulary building
  • Creating writing aids with synonym and antonym suggestions
  • Building language processing tools for AI and NLP projects
  • Integrating vocabulary and word data into mobile and web applications

Evaluation

Advantages & Limitations

Advantages
  • ✓ No authentication required, easy to start
  • ✓ Rich linguistic data including rhymes and syllables
  • ✓ Comprehensive endpoints for multiple word data aspects
  • ✓ Free tier supports up to 2,500 requests per day
Limitations
  • ✗ No official SDKs available
  • ✗ Limited to English language words
  • ✗ Free tier is capped at 2,500 requests per day which may be low for high-volume apps
  • ✗ No SSL certificate info disclosed explicitly on docs

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

1.0
Pricing Model
Free tier + Usage-based pricing on RapidAPI
Credit Card
Not Required
Response Formats
JSON
Supported Languages
6 Languages
SDK Support
REST Only
Rate Limit

2,500 requests per day free; higher tiers available via RapidAPI

Time to Hello World

Less than 10 minutes

Free Tier

2,500 free requests per day via RapidAPI with no credit card required

Best For

Language learning apps, word games, writing assistants, and educational tools

Not Ideal For

Applications requiring multi-language support or offline usage

Tags

#wordnet#rapidapi#rhymes#words-api#synonyms#dictionary#language#education

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