# Cambridge University Press API: Define word

> Looks up a word or phrase on Cambridge Dictionary and returns its ordered meanings, example sentences, grammar labels and UK and US pronunciations.

Unofficial. Not affiliated with or endorsed by Cambridge University Press.

- Page: https://fous.com/methods/dictionary.cambridge.org/define-word
- Method: `dictionary.cambridge.org/define_word`, version 1
- Website: dictionary.cambridge.org
- Returns: headword, meanings with examples and levels, UK and US pronunciation, page link
- Effect: read (it gets data and changes nothing)
- Sign-in: none needed
- Cost: 1 credit per completed run (1¢ with pay as you go); failed runs are free
- Verified: Nov 2, 2026

## Inputs

| Field | Type | Required | In the run below | Description |
|---|---|---|---|---|
| `word` | string | yes | `"take over"` | Word or phrase to define, for example "take over". |
| `dictionary` | string | no | `"british"` | Choose British or American dictionary entries, for example "american". One of "british", "american". Default "british". |

## Output

From a run on Oct 23, 2026. Its input:

```json
{
  "word": "take over",
  "dictionary": "british"
}
```

Its output:

```json
{
  "headword": "take (something) over",
  "meanings": [
    {
      "examples": [
        "He took over from the previous headmaster in February.",
        "She took over as manager two weeks ago.",
        "Jason Lamb has taken over responsibility for this project."
      ],
      "definition": "to start doing a job or being responsible for something that another person did or had responsibility for before:",
      "guide_word": "START DOING",
      "english_level": "B2",
      "grammar_labels": [],
      "part_of_speech": "phrasal verb"
    },
    {
      "examples": [
        "The company he works for has recently been taken over."
      ],
      "definition": "to get control of a company by buying enough of the shares in it:",
      "guide_word": "GET CONTROL",
      "english_level": null,
      "grammar_labels": [],
      "part_of_speech": "phrasal verb"
    },
    {
      "examples": [
        "It's only a matter of time before they take over completely."
      ],
      "definition": "to become more successful or powerful than something or someone else that is involved in the same type of activity:",
      "guide_word": "BECOME MORE POWERFUL",
      "english_level": "C2",
      "grammar_labels": [],
      "part_of_speech": "phrasal verb"
    }
  ],
  "page_link": "https://dictionary.cambridge.org/dictionary/english/take-over",
  "uk_pronunciation": {
    "ipa": "teɪk",
    "audio_link": "https://dictionary.cambridge.org/media/english/uk_pron/u/ukt/uktaj/uktajik002.mp3"
  },
  "us_pronunciation": {
    "ipa": "teɪk",
    "audio_link": "https://dictionary.cambridge.org/media/english/us_pron/t/tak/take_/take.mp3"
  }
}
```

## Run it

From code, with a Fous API key in `FOUS_API_KEY`; the answer's `data` holds the output:

```bash
curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"method":"dictionary.cambridge.org/define_word","input":{"word":"take over","dictionary":"british"}}'
```

From an AI agent connected to the Fous MCP server: its `run` with the same method and input. To connect one, give it `set up https://fous.com/SKILL.md`.

## Ask your agent

- What does the word 'serendipity' mean and how is it pronounced in British and American English?
- Give me the meanings and example sentences for 'take over' from the British dictionary.
- I need the American English pronunciation and grammar labels for 'ubiquitous' on cambridge.org.
- Look up the phrase 'break the ice' and show its meanings ordered by frequency, with the B1 or C1 level for each sense.
- Find the definition of 'resilient' in the American dictionary and give me a link to the page.

## Input schema

```json
{
  "type": "object",
  "required": [
    "word"
  ],
  "properties": {
    "word": {
      "type": "string",
      "minLength": 1,
      "description": "Word or phrase to define, for example \"take over\"."
    },
    "dictionary": {
      "enum": [
        "british",
        "american"
      ],
      "type": "string",
      "default": "british",
      "description": "Choose British or American dictionary entries, for example \"american\"."
    }
  },
  "additionalProperties": false
}
```

## Output schema

```json
{
  "type": "object",
  "required": [
    "headword",
    "meanings",
    "uk_pronunciation",
    "us_pronunciation",
    "page_link"
  ],
  "properties": {
    "headword": {
      "type": "string"
    },
    "meanings": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "part_of_speech",
          "guide_word",
          "definition",
          "english_level",
          "grammar_labels",
          "examples"
        ],
        "properties": {
          "examples": {
            "type": "array",
            "items": {
              "type": "string"
            },
            "maxItems": 3
          },
          "definition": {
            "type": "string"
          },
          "guide_word": {
            "type": [
              "string",
              "null"
            ]
          },
          "english_level": {
            "type": [
              "string",
              "null"
            ]
          },
          "grammar_labels": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "part_of_speech": {
            "type": [
              "string",
              "null"
            ]
          }
        },
        "additionalProperties": false
      }
    },
    "page_link": {
      "type": "string"
    },
    "uk_pronunciation": {
      "type": "object",
      "required": [
        "ipa",
        "audio_link"
      ],
      "properties": {
        "ipa": {
          "type": [
            "string",
            "null"
          ],
          "description": "Phonetic spelling in IPA, if shown."
        },
        "audio_link": {
          "type": [
            "string",
            "null"
          ],
          "description": "Link to the MP3 pronunciation, if shown."
        }
      },
      "additionalProperties": false
    },
    "us_pronunciation": {
      "type": "object",
      "required": [
        "ipa",
        "audio_link"
      ],
      "properties": {
        "ipa": {
          "type": [
            "string",
            "null"
          ],
          "description": "Phonetic spelling in IPA, if shown."
        },
        "audio_link": {
          "type": [
            "string",
            "null"
          ],
          "description": "Link to the MP3 pronunciation, if shown."
        }
      },
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}
```

## See more

- [Cambridge University Press API: Translate word](https://fous.com/methods/dictionary.cambridge.org/translate-word.md): Translates a word between English and a language Cambridge supports. Returns the meanings, the translations and any paired examples.
- [Dictionary.com API: Define word](https://fous.com/methods/dictionary.com/define-word.md): Looks up an English word on Dictionary.com and returns its pronunciation, audio link, numbered definitions per dialect with examples, word origin and first recorded use.
- [Merriam-Webster API: Define word](https://fous.com/methods/merriam-webster.com/define-word.md): Looks up a word or phrase in Merriam-Webster's dictionary and returns its pronunciation, definitions, examples and word history.
- [Dictionary.com API: Get synonyms](https://fous.com/methods/dictionary.com/get-synonyms.md): Gets a word's Thesaurus.com meanings in site order, with part of speech, short meaning, synonyms and antonyms ranked strongest, strong or weak.
- [Merriam-Webster API: Get synonyms](https://fous.com/methods/merriam-webster.com/get-synonyms.md): Looks up a word on its public Merriam-Webster thesaurus page and returns each meaning with its example, synonyms, antonyms and related words.
- [Merriam-Webster API: Get Merriam-Webster Word of the Day](https://fous.com/methods/merriam-webster.com/get-word-of-the-day.md): Gets Merriam-Webster's Word of the Day for today or a past archive date, with its meaning, example, pronunciation and background note. Dates without a published entry are unavailable.
- [WordReference API: Translate word](https://fous.com/methods/wordreference.com/translate-word.md): Translates a word or phrase between languages using WordReference, including usage notes, example sentences and compound forms when shown. Only language pairs listed by WordReference are available.
- [Investopedia API: Define finance term](https://fous.com/methods/investopedia.com/define-term.md): Explains a finance, business, or investing term using its Investopedia dictionary article.
- [All Cambridge University Press methods](https://fous.com/methods/cambridge.org.md)
