diff --git a/README.md b/README.md
index 39c7b60..f2eb42c 100644
--- a/README.md
+++ b/README.md
@@ -142,6 +142,7 @@ Run `opencli list` for the live registry.
 | **bloomberg** | `main` `markets` `economics` `industries` `tech` `politics` `businessweek` `opinions` `feeds` `news` | Public / Browser |
 | **ctrip** | `search` | Browser |
 | **devto** | `top` `tag` `user` | Public |
+| **dictionary** | `search` `synonyms` `examples` | Public |
 | **arxiv** | `search` `paper` | Public |
 | **wikipedia** | `search` `summary` | Public |
 | **hackernews** | `top` | Public |
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 7fb4f73..dff1914 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -143,6 +143,7 @@ npm install -g @jackwener/opencli@latest
 | **bloomberg** | `main` `markets` `economics` `industries` `tech` `politics` `businessweek` `opinions` `feeds` `news` | 公共 API / 浏览器 |
 | **ctrip** | `search` | 浏览器 |
 | **devto** | `top` `tag` `user` | 公开 |
+| **dictionary** | `search` `synonyms` `examples` | 公开 |
 | **arxiv** | `search` `paper` | 公开 |
 | **wikipedia** | `search` `summary` | 公开 |
 | **hackernews** | `top` | 公共 API |
diff --git a/docs/.vitepress/config.mts b/docs/.vitepress/config.mts
index f90e76c..e446920 100644
--- a/docs/.vitepress/config.mts
+++ b/docs/.vitepress/config.mts
@@ -79,6 +79,7 @@ export default defineConfig({
               items: [
                 { text: 'HackerNews', link: '/adapters/browser/hackernews' },
                 { text: 'Dev.to', link: '/adapters/browser/devto' },
+                { text: 'Dictionary', link: '/adapters/browser/dictionary' },
                 { text: 'BBC', link: '/adapters/browser/bbc' },
                 { text: 'Apple Podcasts', link: '/adapters/browser/apple-podcasts' },
                 { text: 'Xiaoyuzhou', link: '/adapters/browser/xiaoyuzhou' },
diff --git a/docs/adapters/browser/dictionary.md b/docs/adapters/browser/dictionary.md
new file mode 100644
index 0000000..6e660b2
--- /dev/null
+++ b/docs/adapters/browser/dictionary.md
@@ -0,0 +1,27 @@
+# Dictionary
+
+**Mode**: 🌐 Public · **Domain**: `api.dictionaryapi.dev`
+
+Search the open dictionary to quickly fetch native definitions, part of speech contexts, and phonetic pronunciations directly in your IDE terminal.
+
+## Commands
+
+| Command | Description |
+|---------|-------------|
+| `opencli dictionary search` | Fetch the exact definition of a word |
+| `opencli dictionary synonyms` | Find related synonyms for a word |
+| `opencli dictionary examples` | Read real-world sentence usage examples |
+
+## Usage Examples
+
+```bash
+# Look up a complex term
+opencli dictionary search --word "serendipity"
+
+# Discover phonetics
+opencli dictionary search --word "ephemeral"
+```
+
+## Prerequisites
+
+- No browser required — utilizes the fast, open JSON definitions API.
diff --git a/docs/adapters/index.md b/docs/adapters/index.md
index 247ca5d..bd6ea50 100644
--- a/docs/adapters/index.md
+++ b/docs/adapters/index.md
@@ -36,6 +36,7 @@ Run `opencli list` for the live registry.
 | **[hackernews](/adapters/browser/hackernews)** | `top` | 🌐 Public |
 | **[bbc](/adapters/browser/bbc)** | `news` | 🌐 Public |
 | **[devto](/adapters/browser/devto)** | `top` `tag` `user` | 🌐 Public |
+| **[dictionary](/adapters/browser/dictionary)** | `search` `synonyms` `examples` | 🌐 Public |
 | **[apple-podcasts](/adapters/browser/apple-podcasts)** | `search` `episodes` `top` | 🌐 Public |
 | **[xiaoyuzhou](/adapters/browser/xiaoyuzhou)** | `podcast` `podcast-episodes` `episode` | 🌐 Public |
 | **[yahoo-finance](/adapters/browser/yahoo-finance)** | `quote` | 🌐 Public |
diff --git a/src/clis/dictionary/examples.yaml b/src/clis/dictionary/examples.yaml
new file mode 100644
index 0000000..9972c53
--- /dev/null
+++ b/src/clis/dictionary/examples.yaml
@@ -0,0 +1,24 @@
+site: dictionary
+name: examples
+description: Read real-world example sentences utilizing the word
+domain: api.dictionaryapi.dev
+strategy: public
+browser: false
+
+args:
+  word:
+    type: string
+    required: true
+    description: Word to get example sentences for
+
+pipeline:
+  - fetch:
+      url: "https://api.dictionaryapi.dev/api/v2/entries/en/${{ args.word }}"
+
+  - map:
+      word: "${{ item.word }}"
+      example: "${{ (() => { if (item.meanings) { for (const m of item.meanings) { if (m.definitions) { for (const d of m.definitions) { if (d.example) return d.example; } } } } return 'No example found in API.'; })() }}"
+
+  - limit: 1
+
+columns: [word, example]
diff --git a/src/clis/dictionary/search.yaml b/src/clis/dictionary/search.yaml
new file mode 100644
index 0000000..ce9a860
--- /dev/null
+++ b/src/clis/dictionary/search.yaml
@@ -0,0 +1,26 @@
+site: dictionary
+name: search
+description: Search the Free Dictionary API for definitions, parts of speech, and pronunciations.
+domain: api.dictionaryapi.dev
+strategy: public
+browser: false
+
+args:
+  word:
+    type: string
+    required: true
+    description: Word to define (e.g., serendipity)
+
+pipeline:
+  - fetch:
+      url: "https://api.dictionaryapi.dev/api/v2/entries/en/${{ args.word }}"
+  
+  - map:
+      word: "${{ item.word }}"
+      phonetic: "${{ item.phonetic || item.phonetics?.[0]?.text || item.phonetics?.[1]?.text || '' }}"
+      type: "${{ item.meanings[0].partOfSpeech }}"
+      definition: "${{ item.meanings[0].definitions[0].definition }}"
+
+  - limit: 1
+
+columns: [word, phonetic, type, definition]
diff --git a/src/clis/dictionary/synonyms.yaml b/src/clis/dictionary/synonyms.yaml
new file mode 100644
index 0000000..05d3794
--- /dev/null
+++ b/src/clis/dictionary/synonyms.yaml
@@ -0,0 +1,24 @@
+site: dictionary
+name: synonyms
+description: Find synonyms for a specific word
+domain: api.dictionaryapi.dev
+strategy: public
+browser: false
+
+args:
+  word:
+    type: string
+    required: true
+    description: Word to find synonyms for (e.g., serendipity)
+
+pipeline:
+  - fetch:
+      url: "https://api.dictionaryapi.dev/api/v2/entries/en/${{ args.word }}"
+
+  - map:
+      word: "${{ item.word }}"
+      synonyms: "${{ (() => { const s = new Set(); if (item.meanings) { for (const m of item.meanings) { if (m.synonyms) { for (const syn of m.synonyms) s.add(syn); } if (m.definitions) { for (const d of m.definitions) { if (d.synonyms) { for (const syn of d.synonyms) s.add(syn); } } } } } const arr = Array.from(s); return arr.length > 0 ? arr.slice(0, 5).join(', ') : 'No synonyms found in API.'; })() }}"
+
+  - limit: 1
+
+columns: [word, synonyms]