Important is an adjective meaning 'having great significance or value; crucial.' The character 重 (zhòng) literally means 'heavy' and conveys weightiness or seriousness, while 要 (yào) means 'essential' or 'necessary.' Together, 重要 emphasizes something that carries substantial influence, impact, or priority in a given situation. It’s commonly used to describe people, tasks, decisions, information, relationships, or responsibilities.

This word appears frequently in both spoken and written Chinese — from casual conversations ('This meeting is important') to formal contexts like news reports or official documents. Unlike some English synonyms, 重要 is neutral in register: it’s neither overly formal nor colloquial, making it highly versatile. It typically modifies nouns directly (e.g., 重要的事情) or follows the verb 是 (shì) in predicate constructions (e.g., 这很重要). It does not change form for tense, number, or gender.