礼貌 (lǐ mào) means 'politeness' or 'courtesy' — the respectful, considerate behavior people show in social interactions. The first character 礼 (lǐ) means 'ritual', 'ceremony', or 'proper conduct', reflecting traditional Chinese values around respectful treatment of others. The second character 貌 (mào) literally means 'appearance' or 'outward expression', so together 礼貌 refers to the visible, behavioral manifestation of respect — such as using honorifics, greeting elders first, or saying 'please' and 'thank you' appropriately.

This noun is commonly used in both formal and everyday contexts: parents teach children 礼貌, teachers praise students for their 礼貌, and employers value employees with good 礼貌. It’s often paired with words like '有' (yǒu, 'to have') or '没' (méi, 'to lack'), as in 有礼貌 (yǒu lǐ mào, 'polite') or 没礼貌 (méi lǐ mào, 'impolite'). While not a verb itself, it functions as a key cultural concept underlying many Chinese social norms and interpersonal expectations.