# Dictionary & Thesaurus

> Use this tool when you need to access comprehensive English word definitions, synonyms, and example usage to enhance writing assistance, vocabulary building, and language learning applications. It provides core functionality for word definition lookup, synonym retrieval, and example sentence extraction through a structured interface. Ideal for AI assistants requiring robust word reference data, it handles API errors and returns organized results with definitions grouped by grammatical function.

Canonical page: https://skillsregistry.net/skills/casualgenius-dictionary-thesaurus  
JSON: https://api.skillsregistry.net/v1/skills/casualgenius-dictionary-thesaurus

## Description

This dictionary and thesaurus MCP server provides English word definitions, synonyms, and example usage through the Free Dictionary API, built by Alex Stansfield using FastMCP and the requests library. The implementation offers three core tools: word definition lookup with part-of-speech categorization, synonym retrieval, and example sentence extraction, making it valuable for writing assistance, vocabulary building, and language learning applications where AI assistants need access to comprehensive word reference data. The server handles API error cases gracefully by returning empty results or error messages when words are not found, and structures the dictionary data into organized meanings with definitions grouped by grammatical function.

## Trust

- **Trust score (0–1):** 0.65
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** api-integration
- **Updated:** 2026-06-11

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/casualgenius-dictionary-thesaurus)
- **Repository:** <https://github.com/casualgenius/mcp-servers/tree/HEAD/servers/words>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "casualgenius-dictionary-thesaurus"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/casualgenius-dictionary-thesaurus` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/casualgenius-dictionary-thesaurus/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt