B1 adverb Formal

未必

/wêɪ.pî/

Not necessarily or not likely. It is an essential hedging word in academic writing to express uncertainty or to avoid making absolute statements.

Examples

3 of 5
1

虽然他很努力,但未必能成功。

Although he works hard, he might not necessarily succeed.

2

这个结论在所有情况下都未必适用。

This conclusion may not necessarily apply in all cases.

3

新政策未必能立即见效。

The new policy may not necessarily take effect immediately.

Word Family

Adverb
未必
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Memory Tip

'未' (not yet) '必' (certain). Literally: Not yet certain.

Quick Quiz

学历高的人,人品___就好。

Correct!

The correct answer is: 未必

Examples

1

虽然他很努力,但未必能成功。

informal

Although he works hard, he might not necessarily succeed.

2

这个结论在所有情况下都未必适用。

academic

This conclusion may not necessarily apply in all cases.

3

新政策未必能立即见效。

business

The new policy may not necessarily take effect immediately.

4

事情未必像你想象得那么糟糕。

everyday

Things are not necessarily as bad as you imagine.

5

专家的话未必全对。

formal

What experts say is not necessarily always right.

Word Family

Adverb
未必

Common Collocations

未必正确 not necessarily correct
未必可行 not necessarily feasible
未必尽然 not necessarily so
未必如愿 not necessarily as one wishes
未必有效 not necessarily effective

Common Phrases

未必如此

it is not necessarily so

未必不可

not necessarily impossible

未必能够

not necessarily able to

Often Confused With

未必 vs 不一定

不一定 is more colloquial, while 未必 is more formal and common in academic writing.

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Usage Notes

Use '未必' to soften a counter-argument or to show critical thinking in IELTS essays.

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Common Mistakes

Learners often use '不一定' in formal writing where '未必' would be more appropriate.

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Memory Tip

'未' (not yet) '必' (certain). Literally: Not yet certain.

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Word Origin

Classical Chinese term for 'not certainly.'

Grammar Patterns

未必 + [Verb/Adjective] 虽...但未必...

Quick Quiz

学历高的人,人品___就好。

Correct!

The correct answer is: 未必

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