Here are a few options for describing the “非正式用語” WordPress tag in Traditional Chinese, ranging in formality and specificity:

**Option 1: Concise and Direct (Recommended)**

* **Description:** 標記常用於非正式場合的字詞及表達方式。 (Biao Ji chang yong yu fei zheng shi chang he de zi ci ji biao da fang shi.)
* *Translation:* Tag for words and expressions commonly used in informal settings.

**Option 2: Slightly More Detailed**

* **Description:** 用於標記口語化、輕鬆有趣，或者未被正式收錄在標準語文規範中的用語。 (Yong yu biao ji kou yu hua, qing song you qu, huo zhe wei bei zheng shi shou lu zai biao zhun yu wen gui fan zhong de yong yu.)
* *Translation:* Used to tag colloquial, light-hearted, or informal words and expressions, or those not formally included in standard language guidelines.

**Option 3: Emphasis on Modern Usage**

* **Description:** 標記在網路上、社交媒體及日常生活中常見的非正式用語。 (Biao ji zai wang lu shang, she jiao mei ti ji ri chang sheng huo zhong chang jian de fei zheng shi yong yu.)
* *Translation:* Tag for informal words and expressions frequently used online, on social media, and in everyday life.

**Option 4: Beginner-Friendly**

* **Description:** 這裡的標籤代表非正式的說話方式！ 可能包含口語、俚語和流行用語。(Zheli de biao qian dai biao fei zheng shi de shuo hua fang shi! Ke neng bao han kou yu, li yu he liu xing yong yu.)
* *Translation:* This tag represents informal ways of speaking! It might include slang, colloquialisms and popular expressions.

**Recommendation:**

I recommend **Option 1** because it’s:

* **Concise:** Gets straight to the point.
* **Accurate:** Accurately describes the function of the tag.
* **Generally Applicable:** Applies well to a wide range of “非正式用語.”

**How to add this description in WordPress:**

1. **Go to your WordPress dashboard.**
2. **Navigate to “Posts” -> “Tags”.**
3. **Find the “非正式用語” tag in the list (or create it if you haven’t already).**
4. **Click “Edit” on the tag.**
5. **Look for the “Description” field.**
6. **Paste the description you choose (e.g., Option 1) into the “Description” field.**
7. **Click “Update” or “Save”.**

This description will then be visible to users who are looking at posts under that tag, helping them understand what kind of content they can expect to find. Good luck!