Look Up Word Definitions
Get detailed definitions for any English word including parts of speech, pronunciation, and usage examples.
Dictionary & Words
Definitions, synonyms & rhymes
Definitions, synonyms, rhymes, and related words for any English word. Includes phonetics, pronunciation audio, parts of speech, examples, and antonyms. All lookups ranked by relevance. Useful for writing, education, and poetry.
Define Word
Get the definition of a word including phonetics, pronunciations, parts of speech, definitions, examples, synonyms, and antonyms.
Returns: Word definition with phonetics, audio pronunciation URL, and meanings grouped by part of speech with examples, synonyms, and antonyms
Parameters
word *stringThe word to define
Example
Define the word serendipity
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
-d '{
"tool": "dictionary-words",
"skill": "define",
"input": {
"word": "serendipity"
}
}' \
https://api.toolrouter.com/v1/tools/callFind Synonyms
Find synonyms for a word, ranked by relevance. Returns semantically similar words with scores.
Returns: List of synonyms ranked by relevance with scores
Parameters
word *stringThe word to find synonyms for
limitnumberMaximum number of synonyms to return (default 10, max 50)
Example
Find synonyms for happy
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
-d '{
"tool": "dictionary-words",
"skill": "synonyms",
"input": {
"word": "happy"
}
}' \
https://api.toolrouter.com/v1/tools/callFind Rhymes
Find words that rhyme with a given word, ranked by relevance. Useful for creative writing, poetry, songwriting, and wordplay.
Returns: List of rhyming words ranked by relevance with scores
Parameters
word *stringThe word to find rhymes for
limitnumberMaximum number of rhymes to return (default 10, max 50)
Example
Find words that rhyme with moon
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
-d '{
"tool": "dictionary-words",
"skill": "rhymes",
"input": {
"word": "moon"
}
}' \
https://api.toolrouter.com/v1/tools/callRelated Words
Find words related to a given word or topic. Returns words that are triggered by or associated with the input, useful for brainstorming and expanding vocabulary.
Returns: List of related words ranked by relevance with scores
Parameters
word *stringThe word or topic to find related words for
limitnumberMaximum number of related words to return (default 10, max 50)
Example
Find words related to ocean
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
-d '{
"tool": "dictionary-words",
"skill": "related_words",
"input": {
"word": "ocean"
}
}' \
https://api.toolrouter.com/v1/tools/callQuick Start
MCP (Claude Code)
claude mcp add --transport stdio \
--env TOOLROUTER_API_KEY=YOUR_API_KEY \
toolrouter -- npx -y toolrouter-mcpREST API
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
-d '{"tool":"dictionary-words","skill":"define","input":{}}' \
https://api.toolrouter.com/v1/tools/callUse Cases
Find Synonyms for Better Writing
Discover synonyms and related words to improve your writing, avoid repetition, and find the perfect word.
Search Papers by Topic
Find relevant academic papers on any research topic across millions of scholarly publications.
Geocode Addresses to Coordinates
Convert street addresses into precise latitude and longitude coordinates for mapping and spatial analysis.
Workflows
Multilingual Communication Kit
Translate text, look up definitions, and generate audio pronunciations for seamless cross-language communication.
Language Learning Toolkit
Study vocabulary, translate phrases, and practice pronunciation with audio in one learning workflow.
Frequently Asked Questions
Does it show pronunciation and audio for a word?
Yes. `define` returns phonetics, pronunciation audio, parts of speech, meanings, examples, synonyms, and antonyms.
What is the difference between definitions and synonyms?
`define` explains the word itself. `synonyms` gives close alternatives, ranked by relevance, which is better for rewriting.
Can I find rhymes or related words for creative writing?
Yes. Use `rhymes` for poetry and songwriting, and `related_words` when you want connected ideas for brainstorming.
How many results can I ask for?
You can raise the limit up to 50 when you want a wider set of options, especially for synonyms or rhymes.