“闊誕”一詞在中文語境中較為罕見，若指 **“夸張荒誕、不合實際”** 的含義，可譯為：

1. **Exaggerated and absurd**
（強調夸大與不合邏輯）
*例句：他的故事過于闊誕，沒人相信。*
→ His story was too exaggerated and absurd to be believed.

2. **Bombastic and fantastic**
（側重言辭浮夸、內容離奇）
*例句：這部小說的情節闊誕不經。*
→ The plot of this novel is bombastic and fantastic.

3. **Extravagant and unbelievable**
（強調超出常理、難以置信）
*例句：他的闊誕言論引發爭議。*
→ His extravagant and unbelievable remarks sparked controversy.

若該詞為特定名稱或文化專有詞，請提供更多背景信息，以便提供更精準的翻譯。