Developer API · Live

Dictionary data built for developers

Definitions, examples, IPA pronunciations, syllables, synonyms, antonyms and synthesized pronunciation audio — one REST API. Free to use right now, no API key required.

curl https://quickpronounce-api.vercel.app/v1/dictionary/wonderful

Endpoints

Two endpoints. Both work anonymously — just send a request.

GET/v1/dictionary/:word

Definitions, examples, part of speech, synonyms, antonyms, IPA phonetics and an anglicized syllable breakdown for a single word.

Request
curl https://quickpronounce-api.vercel.app/v1/dictionary/wonderful
Response
{
  "success": true,
  "data": {
    "word": "wonderful",
    "entries": [
      {
        "partOfSpeech": "Adjective",
        "definitions": [
          "Tending to excite wonder; surprising, extraordinary.",
          "Surprisingly excellent; very good or admirable."
        ],
        "examples": [
          "They served a wonderful six-course meal."
        ]
      },
      {
        "partOfSpeech": "Adverb",
        "definitions": ["Exceedingly, to a great extent."],
        "examples": ["The project was wonderfully successful."]
      }
    ],
    "defaultPartOfSpeech": "Adjective",
    "synonyms": ["well", "great", "all right", "top", "nice"],
    "antonyms": ["boring", "common", "disgusting", "dull"],
    "phonetics": {
      "us": "/ˈwʌndəfl/",
      "uk": "/ˈwʌndəfl/"
    },
    "syllables": {
      "us": [
        { "text": "wuhn", "stress": 1 },
        { "text": "derfl", "stress": 0 }
      ],
      "uk": [
        { "text": "wuhn", "stress": 1 },
        { "text": "duhfl", "stress": 0 }
      ]
    }
  }
}
GET/v1/pronunciation/:word

Everything the dictionary endpoint returns for phonetics and syllables, plus a synthesized MP3 pronunciation clip (base64-encoded) using Google Cloud’s WaveNet voices.

ParamTypeDescription
accentquery, optionalus (default) or uk
genderquery, optionalmale (default) or female
speedquery, optionalslow, normal (default) or fast
Request
curl "https://quickpronounce-api.vercel.app/v1/pronunciation/wonderful?accent=us&gender=female&speed=fast"
Response
{
  "success": true,
  "data": {
    "word": "wonderful",
    "meta": {
      "accent": "us",
      "gender": "female",
      "speed": "fast"
    },
    "phonetics": {
      "us": "/ˈwʌndəfl/",
      "uk": "/ˈwʌndəfl/"
    },
    "syllables": {
      "us": [
        { "text": "wuhn", "stress": 1 },
        { "text": "derfl", "stress": 0 }
      ],
      "uk": [
        { "text": "wuhn", "stress": 1 },
        { "text": "duhfl", "stress": 0 }
      ]
    },
    "audio": {
      "content": "<base64-encoded mp3>",
      "encoding": "base64",
      "format": "mp3"
    }
  }
}

Try It Yourself

Search any word and see the live response from both endpoints — no API key needed.

Rate Limits

No API key required right now — usage is limited per IP address while this is in public testing.

/v1/dictionary

Per minute60 requests
Per day1,000 requests

/v1/pronunciation

Per minute10 requests
Per day50 requests

These are fair-use limits enforced per IP while the API is in public testing, not a hard global ceiling. Need higher limits or a dedicated API key? Get in touch.

What's In The Dataset

116,801

Words

373,853

Definitions

333,666

Examples

178,658

Dictionary Entries

Coverage

Definitions
100%
Examples
96.4%
IPA Pronunciation
100%

Averages per entry

Definitions2.09
Examples1.87

POS distribution

Noun46.2%
Adjective19.4%
Verb15.2%
Adverb2.2%
Other17.0%

Possible Use Cases

Language Learning

Vocabulary builders, pronunciation tools and educational products.

AI Applications

Enhance writing assistants and language-focused AI products.

Browser Extensions

Instant definitions, IPA pronunciation and examples.

Developer Tools

Integrate lexical data into your products quickly.

Creative Writing

Help writers find the perfect word with synonyms and examples.

Accessibility Tools

Plain definitions and IPA guides for understanding complex text.

Building something bigger?

The free tier above works for testing and small projects. For higher limits or a dedicated API key, get in touch. The full enriched dataset is also available as a one-time licensed download, separate from API access.

Dictionary content is derived in part from Wiktionary, used under CC BY-SA 4.0, with definitions and examples rewritten and enriched by QuickPronounce. Pronunciation data draws on CMUdict and WordNet.