必须

必

须 is a common Chinese adverb meaning 'must' or 'have to,' indicating necessity or obligation. It emphasizes that something is required or unavoidable, often used to express rules, requirements, or logical conclusions.

The character 必 (bì) originally meant 'determined' or 'resolute,' while 须 (xū) means 'must' or 'should.' Together, they form a compound that conveys a strong sense of necessity, similar to 'must' in English but with a more formal or definitive tone.

必

须 is frequently used in daily conversation, official documents, and written language to emphasize obligations, conditions, or required actions. It is an essential word for expressing necessity in both personal and professional contexts.