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一定

yī dìng
HSK 2.0 Level 3 HSK 3.0 Level 3 Adjective Very common

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This word has multiple dictionary entries. Choose the reading or usage you want to review.

一定
yí dìng Adverb certainly; must
一定
yī dìng Adjective surely; certainly

Definitions

  1. 1. surely
  2. 2. certainly
  3. 3. necessarily
  4. 4. fixed
  5. 5. a certain (extent etc)
  6. 6. given
  7. 7. particular
  8. 8. must

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Word relationships

Antonyms

1 item
未必
wèi bì

not necessarily

Negation of 'certainly', meaning 'not necessarily'

Synonyms

1 item
肯定
kěn dìng

to be certain

As an adverb meaning 'certainly' or 'surely'

Grammar

Guides that feature 一定

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1 guide
HSK 2.0 Level 3+ HSK 3.0 Level 3+ 7 min
Adverbs 大概, 好像, 一定, 必须, 差不多, 几乎

Show how sure you are with 好像, 大概 and 一定, say what must happen with 必须, and say “almost” with 差不多 and 几乎.

Reading: yī dìng Open guide

Example Sentences

5 shown
他 一定 会来。
He will definitely come.
我们 一定 要消灭害虫。
We must eliminate the pests.
我 一定 要争气，考上好大学。
I must work hard and get into a good university to prove myself.
只要我们众志成城，就 一定 能克服困难。
As long as we are united, we will surely overcome the difficulties.
只要大家齐心协力，就 一定 能成功。
As long as everyone works together with one heart and mind, we will surely succeed.

AI-generated examples are marked with this icon.

Words Containing 一定

不一定
bù yī dìng

not necessarily

一定要
yī dìng yào

must

Child Words of 一定

一
yī

one

定
dìng

to set