diff --git a/_locales/de/messages.json b/_locales/de/messages.json
index a190aed..0e1e55a 100644
--- a/_locales/de/messages.json
+++ b/_locales/de/messages.json
@@ -185,6 +185,18 @@
   "copy": {
     "message": "Kopieren"
   },
+  "move_to_list": {
+    "message": "Zur Liste verschieben"
+  },
+  "copy_to_list": {
+    "message": "In Liste kopieren"
+  },
+  "no_other_lists": {
+    "message": "Keine anderen Listen"
+  },
+  "word_actions": {
+    "message": "In eine andere Liste verschieben oder kopieren"
+  },
   "merge_lists_min_two": {
     "message": "Wählen Sie mindestens zwei Listen zum Zusammenführen aus."
   },
diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index fd0ea0f..0ac2023 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -191,6 +191,18 @@
   "copy": {
     "message": "Copy"
   },
+  "move_to_list": {
+    "message": "Move to list"
+  },
+  "copy_to_list": {
+    "message": "Copy to list"
+  },
+  "no_other_lists": {
+    "message": "No other lists"
+  },
+  "word_actions": {
+    "message": "Move or copy to another list"
+  },
   "merge_lists_min_two": {
     "message": "Select at least two lists to merge."
   },
diff --git a/_locales/es/messages.json b/_locales/es/messages.json
index 967f591..ab94400 100644
--- a/_locales/es/messages.json
+++ b/_locales/es/messages.json
@@ -191,6 +191,18 @@
   "copy": {
     "message": "Copiar"
   },
+  "move_to_list": {
+    "message": "Mover a lista"
+  },
+  "copy_to_list": {
+    "message": "Copiar a lista"
+  },
+  "no_other_lists": {
+    "message": "No hay otras listas"
+  },
+  "word_actions": {
+    "message": "Mover o copiar a otra lista"
+  },
   "merge_lists_min_two": {
     "message": "Seleccione al menos dos listas para combinar."
   },
diff --git a/_locales/fr/messages.json b/_locales/fr/messages.json
index 44712d2..6ce3962 100644
--- a/_locales/fr/messages.json
+++ b/_locales/fr/messages.json
@@ -191,6 +191,18 @@
     "copy": {
         "message": "Copier"
     },
+    "move_to_list": {
+        "message": "Déplacer vers la liste"
+    },
+    "copy_to_list": {
+        "message": "Copier vers la liste"
+    },
+    "no_other_lists": {
+        "message": "Aucune autre liste"
+    },
+    "word_actions": {
+        "message": "Déplacer ou copier vers une autre liste"
+    },
     "merge_lists_min_two": {
         "message": "Sélectionnez au moins deux listes à fusionner."
     },
diff --git a/_locales/hi/messages.json b/_locales/hi/messages.json
index c91b039..fda9a74 100644
--- a/_locales/hi/messages.json
+++ b/_locales/hi/messages.json
@@ -191,6 +191,18 @@
     "copy": {
         "message": "कॉपी करें"
     },
+    "move_to_list": {
+        "message": "सूची में ले जाएं"
+    },
+    "copy_to_list": {
+        "message": "सूची में कॉपी करें"
+    },
+    "no_other_lists": {
+        "message": "कोई अन्य सूची नहीं"
+    },
+    "word_actions": {
+        "message": "किसी अन्य सूची में ले जाएं या कॉपी करें"
+    },
     "merge_lists_min_two": {
         "message": "मर्ज करने के लिए कम से कम दो सूचियाँ चुनें।"
     },
diff --git a/_locales/it/messages.json b/_locales/it/messages.json
index ca0cc09..5ca5578 100644
--- a/_locales/it/messages.json
+++ b/_locales/it/messages.json
@@ -191,6 +191,18 @@
     "copy": {
         "message": "Copia"
     },
+    "move_to_list": {
+        "message": "Sposta in elenco"
+    },
+    "copy_to_list": {
+        "message": "Copia in elenco"
+    },
+    "no_other_lists": {
+        "message": "Nessun altro elenco"
+    },
+    "word_actions": {
+        "message": "Sposta o copia in un altro elenco"
+    },
     "merge_lists_min_two": {
         "message": "Seleziona almeno due elenchi da unire."
     },
diff --git a/_locales/ja/messages.json b/_locales/ja/messages.json
index ef27a05..32d8c6d 100644
--- a/_locales/ja/messages.json
+++ b/_locales/ja/messages.json
@@ -191,6 +191,18 @@
     "copy": {
         "message": "コピー"
     },
+    "move_to_list": {
+        "message": "リストに移動"
+    },
+    "copy_to_list": {
+        "message": "リストにコピー"
+    },
+    "no_other_lists": {
+        "message": "他のリストはありません"
+    },
+    "word_actions": {
+        "message": "別のリストに移動またはコピー"
+    },
     "merge_lists_min_two": {
         "message": "統合するには少なくとも2つのリストを選択してください。"
     },
diff --git a/_locales/ko/messages.json b/_locales/ko/messages.json
index fc7baab..9887972 100644
--- a/_locales/ko/messages.json
+++ b/_locales/ko/messages.json
@@ -191,6 +191,18 @@
     "copy": {
         "message": "복사"
     },
+    "move_to_list": {
+        "message": "목록으로 이동"
+    },
+    "copy_to_list": {
+        "message": "목록에 복사"
+    },
+    "no_other_lists": {
+        "message": "다른 목록 없음"
+    },
+    "word_actions": {
+        "message": "다른 목록으로 이동 또는 복사"
+    },
     "merge_lists_min_two": {
         "message": "병합하려면 최소 두 개의 리스트를 선택하세요."
     },
diff --git a/_locales/nl/messages.json b/_locales/nl/messages.json
index 6e3d2bf..19563fd 100644
--- a/_locales/nl/messages.json
+++ b/_locales/nl/messages.json
@@ -191,6 +191,18 @@
   "copy": {
     "message": "Kopiëren"
   },
+  "move_to_list": {
+    "message": "Verplaats naar lijst"
+  },
+  "copy_to_list": {
+    "message": "Kopieer naar lijst"
+  },
+  "no_other_lists": {
+    "message": "Geen andere lijsten"
+  },
+  "word_actions": {
+    "message": "Verplaats of kopieer naar een andere lijst"
+  },
   "merge_lists_min_two": {
     "message": "Selecteer minimaal twee lijsten om samen te voegen."
   },
diff --git a/_locales/pl/messages.json b/_locales/pl/messages.json
index 6832e0d..c6f308f 100644
--- a/_locales/pl/messages.json
+++ b/_locales/pl/messages.json
@@ -191,6 +191,18 @@
   "copy": {
     "message": "Kopiuj"
   },
+  "move_to_list": {
+    "message": "Przenieś do listy"
+  },
+  "copy_to_list": {
+    "message": "Kopiuj do listy"
+  },
+  "no_other_lists": {
+    "message": "Brak innych list"
+  },
+  "word_actions": {
+    "message": "Przenieś lub skopiuj do innej listy"
+  },
   "merge_lists_min_two": {
     "message": "Wybierz co najmniej dwie listy do scalenia."
   },
diff --git a/_locales/pt_BR/messages.json b/_locales/pt_BR/messages.json
index e9579fa..336295d 100644
--- a/_locales/pt_BR/messages.json
+++ b/_locales/pt_BR/messages.json
@@ -191,6 +191,18 @@
   "copy": {
     "message": "Copiar"
   },
+  "move_to_list": {
+    "message": "Mover para lista"
+  },
+  "copy_to_list": {
+    "message": "Copiar para lista"
+  },
+  "no_other_lists": {
+    "message": "Nenhuma outra lista"
+  },
+  "word_actions": {
+    "message": "Mover ou copiar para outra lista"
+  },
   "merge_lists_min_two": {
     "message": "Selecione pelo menos duas listas para mesclar."
   },
diff --git a/_locales/ru/messages.json b/_locales/ru/messages.json
index 2c479cf..228525b 100644
--- a/_locales/ru/messages.json
+++ b/_locales/ru/messages.json
@@ -191,6 +191,18 @@
   "copy": {
     "message": "Копировать"
   },
+  "move_to_list": {
+    "message": "Переместить в список"
+  },
+  "copy_to_list": {
+    "message": "Копировать в список"
+  },
+  "no_other_lists": {
+    "message": "Нет других списков"
+  },
+  "word_actions": {
+    "message": "Переместить или скопировать в другой список"
+  },
   "merge_lists_min_two": {
     "message": "Выберите как минимум два списка для объединения."
   },
diff --git a/_locales/tr/messages.json b/_locales/tr/messages.json
index 72c832a..d7f4594 100644
--- a/_locales/tr/messages.json
+++ b/_locales/tr/messages.json
@@ -191,6 +191,18 @@
   "copy": {
     "message": "Kopyala"
   },
+  "move_to_list": {
+    "message": "Listeye taşı"
+  },
+  "copy_to_list": {
+    "message": "Listeye kopyala"
+  },
+  "no_other_lists": {
+    "message": "Başka liste yok"
+  },
+  "word_actions": {
+    "message": "Başka bir listeye taşı veya kopyala"
+  },
   "merge_lists_min_two": {
     "message": "Birleştirmek için en az iki liste seçin."
   },
diff --git a/_locales/zh_CN/messages.json b/_locales/zh_CN/messages.json
index 9a9e329..38f36a9 100644
--- a/_locales/zh_CN/messages.json
+++ b/_locales/zh_CN/messages.json
@@ -191,6 +191,18 @@
   "copy": {
     "message": "复制"
   },
+  "move_to_list": {
+    "message": "移动到列表"
+  },
+  "copy_to_list": {
+    "message": "复制到列表"
+  },
+  "no_other_lists": {
+    "message": "没有其他列表"
+  },
+  "word_actions": {
+    "message": "移动或复制到另一个列表"
+  },
   "merge_lists_min_two": {
     "message": "选择至少两个列表进行合并。"
   },
diff --git a/popup/popup.css b/popup/popup.css
index d961caa..618718f 100644
--- a/popup/popup.css
+++ b/popup/popup.css
@@ -645,6 +645,60 @@ body {
   text-align: center;
 }
 
+/* Word item 3-dot menu dropdown */
+.word-item-menu-dropdown {
+  display: none;
+  position: fixed;
+  min-width: 160px;
+  background: var(--input-bg);
+  border: 1px solid var(--input-border);
+  border-radius: 8px;
+  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.15);
+  z-index: 200;
+  overflow: hidden;
+}
+
+.word-item-menu-dropdown.open {
+  display: block;
+}
+
+.word-item-menu-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  width: 100%;
+  padding: 8px 12px;
+  border: none;
+  background: none;
+  font-size: 13px;
+  color: var(--text-color);
+  cursor: pointer;
+  text-align: left;
+  transition: background 0.15s;
+}
+
+.word-item-menu-item:hover:not(.disabled) {
+  background: var(--section-bg);
+}
+
+.word-item-menu-item.disabled {
+  opacity: 0.6;
+  cursor: default;
+}
+
+.word-item-menu-item i {
+  font-size: 12px;
+  opacity: 0.8;
+  flex-shrink: 0;
+}
+
+.word-item-menu-item .list-color-indicator {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
 /* Empty State */
 .empty-state {
   flex: 1;
diff --git a/popup/popup.html b/popup/popup.html
index fc9a576..cb974ee 100644
--- a/popup/popup.html
+++ b/popup/popup.html
@@ -196,6 +196,9 @@
           <!-- Word List -->
           <div id="wordList" class="word-list-container"></div>
 
+          <!-- Word item 3-dot menu dropdown (positioned by JS) -->
+          <div id="wordItemMenuDropdown" class="word-item-menu-dropdown" role="menu" aria-hidden="true"></div>
+
           <!-- Help text -->
           <p class="word-list-hint" data-i18n="multi_select_hint">Click to select • Ctrl/Cmd+Click for multi-select</p>
         </div>
diff --git a/src/popup/PopupController.ts b/src/popup/PopupController.ts
index ac2c9ab..c207911 100644
--- a/src/popup/PopupController.ts
+++ b/src/popup/PopupController.ts
@@ -16,6 +16,9 @@ export class PopupController {
   private activeTab = 'lists';
   private pageHighlights: Array<{ word: string; count: number; background: string; foreground: string }> = [];
   private highlightIndices = new Map<string, number>();
+  private wordMenuOpenForIndex: number | null = null;
+  private wordMenuCopyOnly = false;
+  private wordMenuCloseListener: (() => void) | null = null;
 
   async initialize(): Promise<void> {
     await this.loadData();
@@ -278,6 +281,17 @@ export class PopupController {
       const list = this.lists[this.currentListIndex];
       if (!list) return;
 
+      // Handle 3-dot menu button click
+      const menuBtn = target.closest('.word-item-menu-btn') as HTMLElement | null;
+      if (menuBtn) {
+        e.stopPropagation();
+        const index = Number(menuBtn.dataset.index);
+        if (!Number.isNaN(index)) {
+          this.openWordItemMenu(index, menuBtn);
+        }
+        return;
+      }
+
       // Handle edit button click
       const editBtn = target.closest('.word-item-icon-btn.edit-word-btn') as HTMLElement | null;
       if (editBtn) {
@@ -428,6 +442,155 @@ export class PopupController {
     input.select();
   }
 
+  private openWordItemMenu(wordIndex: number, buttonEl: HTMLElement): void {
+    const dropdown = document.getElementById('wordItemMenuDropdown');
+    if (!dropdown) return;
+
+    this.closeWordItemMenu();
+
+    const rect = buttonEl.getBoundingClientRect();
+    const padding = 8;
+    dropdown.style.left = `${rect.left}px`;
+    dropdown.style.top = `${rect.bottom + 4}px`;
+    dropdown.style.right = '';
+
+    const moveLabel = chrome.i18n.getMessage('move_to_list') || 'Move to list';
+    const copyLabel = chrome.i18n.getMessage('copy_to_list') || 'Copy to list';
+
+    dropdown.innerHTML = `
+      <button type="button" class="word-item-menu-item" data-action="move">
+        <i class="fa-solid fa-arrow-right"></i>
+        <span>${DOMUtils.escapeHtml(moveLabel)}</span>
+      </button>
+      <button type="button" class="word-item-menu-item" data-action="copy">
+        <i class="fa-solid fa-copy"></i>
+        <span>${DOMUtils.escapeHtml(copyLabel)}</span>
+      </button>
+    `;
+
+    dropdown.querySelectorAll('.word-item-menu-item').forEach(item => {
+      item.addEventListener('click', (e) => {
+        e.stopPropagation();
+        const action = (item as HTMLElement).dataset.action;
+        if (action === 'move') {
+          this.showWordMenuListPicker(wordIndex, false);
+        } else if (action === 'copy') {
+          this.showWordMenuListPicker(wordIndex, true);
+        }
+      });
+    });
+
+    this.wordMenuOpenForIndex = wordIndex;
+    dropdown.classList.add('open');
+    dropdown.setAttribute('aria-hidden', 'false');
+
+    requestAnimationFrame(() => {
+      const dr = dropdown.getBoundingClientRect();
+      const vw = window.innerWidth;
+      const vh = window.innerHeight;
+      if (dr.right > vw - padding) {
+        dropdown.style.left = `${vw - dr.width - padding}px`;
+      }
+      if (dr.left < padding) {
+        dropdown.style.left = `${padding}px`;
+      }
+      if (dr.bottom > vh - padding) {
+        dropdown.style.top = `${vh - dr.height - padding}px`;
+      }
+      if (dr.top < padding) {
+        dropdown.style.top = `${padding}px`;
+      }
+    });
+
+    const closeHandler = (e: MouseEvent) => {
+      const target = e.target as Node;
+      if (dropdown.contains(target) || buttonEl.contains(target)) return;
+      this.closeWordItemMenu();
+      document.removeEventListener('click', closeHandler);
+      this.wordMenuCloseListener = null;
+    };
+    this.wordMenuCloseListener = () => {
+      document.removeEventListener('click', closeHandler);
+      this.wordMenuCloseListener = null;
+    };
+    setTimeout(() => document.addEventListener('click', closeHandler), 0);
+  }
+
+  private showWordMenuListPicker(wordIndex: number, copyOnly: boolean): void {
+    const dropdown = document.getElementById('wordItemMenuDropdown');
+    if (!dropdown || this.wordMenuOpenForIndex === null) return;
+
+    this.wordMenuCopyOnly = copyOnly;
+    const currentList = this.lists[this.currentListIndex];
+    const otherLists = this.lists
+      .map((list, index) => ({ list, index }))
+      .filter(({ index }) => index !== this.currentListIndex);
+
+    if (otherLists.length === 0) {
+      const noOtherLabel = chrome.i18n.getMessage('no_other_lists') || 'No other lists';
+      dropdown.innerHTML = `
+        <div class="word-item-menu-item disabled">
+          <span>${DOMUtils.escapeHtml(noOtherLabel)}</span>
+        </div>
+      `;
+      return;
+    }
+
+    dropdown.innerHTML = otherLists.map(({ list, index }) => `
+      <button type="button" class="word-item-menu-item" data-target-index="${index}">
+        <span class="list-color-indicator" style="background-color: ${DOMUtils.escapeHtml(list.background)}"></span>
+        <span>${DOMUtils.escapeHtml(list.name)}</span>
+      </button>
+    `).join('');
+
+    dropdown.querySelectorAll('.word-item-menu-item[data-target-index]').forEach(item => {
+      item.addEventListener('click', (e) => {
+        e.stopPropagation();
+        const targetIndex = Number((item as HTMLElement).dataset.targetIndex);
+        if (Number.isNaN(targetIndex)) return;
+        if (this.wordMenuCopyOnly) {
+          this.copyWordToOtherList(wordIndex, targetIndex);
+        } else {
+          this.moveWordToOtherList(wordIndex, targetIndex);
+        }
+        this.closeWordItemMenu();
+        this.save();
+        this.renderWords();
+        this.renderLists();
+      });
+    });
+  }
+
+  private closeWordItemMenu(): void {
+    const dropdown = document.getElementById('wordItemMenuDropdown');
+    if (dropdown) {
+      dropdown.classList.remove('open');
+      dropdown.setAttribute('aria-hidden', 'true');
+      dropdown.innerHTML = '';
+    }
+    this.wordMenuOpenForIndex = null;
+    if (this.wordMenuCloseListener) {
+      this.wordMenuCloseListener();
+    }
+  }
+
+  private moveWordToOtherList(wordIndex: number, targetListIndex: number): void {
+    const list = this.lists[this.currentListIndex];
+    const targetList = this.lists[targetListIndex];
+    const word = list.words[wordIndex];
+    if (!word || !targetList) return;
+    targetList.words.push({ ...word });
+    list.words.splice(wordIndex, 1);
+  }
+
+  private copyWordToOtherList(wordIndex: number, targetListIndex: number): void {
+    const list = this.lists[this.currentListIndex];
+    const targetList = this.lists[targetListIndex];
+    const word = list.words[wordIndex];
+    if (!word || !targetList) return;
+    targetList.words.push({ ...word });
+  }
+
   private setupWordSelection(): void {
     document.getElementById('selectAllBtn')?.addEventListener('click', () => {
       const list = this.lists[this.currentListIndex];
@@ -890,6 +1053,7 @@ export class PopupController {
   }
 
   private renderWords(): void {
+    this.closeWordItemMenu();
     const list = this.lists[this.currentListIndex];
     const wordList = document.getElementById('wordList') as HTMLDivElement;
 
@@ -922,6 +1086,7 @@ export class PopupController {
     const list = this.lists[this.currentListIndex];
     const bgColor = word.background || list.background;
     const fgColor = word.foreground || list.foreground;
+    const menuTitle = chrome.i18n.getMessage('word_actions') || 'Actions';
 
     return `
       <div class="word-item ${isSelected ? 'selected' : ''}" data-index="${realIndex}">
@@ -940,6 +1105,9 @@ export class PopupController {
               <i class="fa-solid fa-eye-slash eye-disabled"></i>
             </span>
           </label>
+          <button type="button" class="word-item-icon-btn word-item-menu-btn" data-index="${realIndex}" title="${DOMUtils.escapeHtml(menuTitle)}" aria-label="${DOMUtils.escapeHtml(menuTitle)}">
+            <i class="fa-solid fa-ellipsis-v"></i>
+          </button>
         </div>
       </div>
     `;