必

• Pinyin: bì
• Hanzi breakdown: 必 = 心 (heart) with a dot, symbolizing determination

Meaning

Certainly; must; necessarily. An adverb indicating certainty or inevitability.

More literary than 一定. Appears in many compound words: 必须 (must), 必要 (necessary), 必然 (inevitable), 必定 (certainly), 未必 (not necessarily). Common in formal writing.

Examples

1. 事情既然已经开始了，就必有结果。 Since things have already begun, there must certainly be a result.
2. 他做事那么认真，这次考试必能取得好成绩。 He does things so conscientiously; he will certainly get good results on this exam.
3. 言必信，行必果，这是做人的基本准则。 Be true to your word and resolute in your actions — these are basic principles of being a person.

Usage Guide

Context: literary, formal writing, proverbs

Tone: emphatic

Do Say

• 有志者事竟成，必能做到。(Where there's a will there's a way — you'll certainly succeed.)
• 言必信，行必果。(Be true to your word and resolute in your actions.)

Don't Say

• 在口语中单独用'必'——现代口语中通常说'一定'或用'必须'等完整词 (Don't use 必 alone in casual speech — use 一定 or complete words like 必须)

Origin & History

Ancient character originally depicting a weapon or tool, evolved to mean 'certainly' through semantic shift.

Cultural Context

Generation: All ages

Social background: Universal