How to Choose the Best Dictionaries API in 2026
There are 13 Dictionaries APIs in our directory. Of these, 5 require no authentication, making them ideal for quick prototyping. 5 are rated beginner-friendly.
Last updated: April 2026
Quick Comparison: Top 10 Dictionaries APIs
| Name | Auth | HTTPS | CORS | Difficulty |
|---|---|---|---|---|
| Chinese Character Web | No Auth | ✗ | ✗ | Beginner |
| Chinese Text Project | No Auth | ✓ | ? | Beginner |
| Collins | API Key | ✓ | ? | Intermediate |
| Free Dictionary | No Auth | ✓ | ? | Beginner |
| Indonesia Dictionary | No Auth | ✓ | ? | Beginner |
| Lingua Robot | API Key | ✓ | ✓ | Intermediate |
| Merriam-Webster | API Key | ✓ | ? | Intermediate |
| OwlBot | API Key | ✓ | ✓ | Intermediate |
| Oxford | API Key | ✓ | ✗ | Intermediate |
| Synonyms | API Key | ✓ | ? | Intermediate |
Free Dictionaries APIs (No Auth)
These APIs require no API key or signup. Start using them immediately.
Chinese Character Web
⭐ Beginner's PickChinese Character Web is a free API providing definitions, stroke counts, and pronunciations for Chinese characters without requiring an API key.
Chinese Text Project
⭐ Beginner's PickChinese Text Project offers a free API to access a massive digital library of pre-modern Chinese texts, including classics like the Analects and Tao Te Ching.
Free Dictionary
Free Dictionary provides programmatic access to definitions, phonetics, pronounciations, parts of speech, examples, synonyms via REST API.
Indonesia Dictionary
Indonesia Dictionary provides programmatic access to indonesia dictionary many words via REST API.
Wiktionary
⭐ Beginner's PickWiktionary's API gives free access to the entire collaboratively-edited dictionary, covering definitions, pronunciations, etymology, and translations for words in hundreds of languages.
Try It in 5 Minutes: Chinese Character Web
Quick implementation example using Chinese Character Web.
Using curl
curl http://ccdb.hemiola.com/
JavaScript
const url = "http://ccdb.hemiola.com/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); New to APIs? Read our Getting Started Guide →
Frequently Asked Questions
How many Dictionaries APIs are available?
There are 13 Dictionaries APIs in our directory as of 2026.
Are there free Dictionaries APIs?
Yes, 5 Dictionaries APIs require no authentication and are completely free to use.
What is the easiest Dictionaries API to use?
Chinese Character Web is one of the easiest to get started with. It is rated as beginner-level and requires no authentication.
Do I need an API key for Dictionaries APIs?
It depends. 5 APIs need no authentication, 8 require an API key, and 0 use OAuth.