一定yí dìngsurely; certainly; definitely
一定 (yí dìng) means "surely," "certainly" or "definitely," as in 他明天一定来 (He will definitely come tomorrow), 我一定去 (I will certainly go) and 你今天一定要早睡觉 (You definitely must go to bed early today). In all three, 一定 means surely or definitely. This entry covers this one sense.
What does 一定 mean?
- 1.
surely; certainly; definitelyadverb
What do the characters in 一定 mean?
- 一not compositional here
- 定definitely
How do you use 一定?
See it in 他明天一定来, 我一定去 and 你今天一定要早睡觉.
Patterns
一定 + verb
我一定去。
Wǒ yí dìng qù.
I will certainly go.
What are some examples of 一定 in a sentence?
How is 一定 used in a conversation?
- Speaker A:
明天你来吗?
Míngtiān nǐ lái ma?
Are you coming tomorrow?
- Speaker B:
我一定来。
Wǒ yídìng lái.
I will definitely come.
- Speaker A:
几点来?
Jǐ diǎn lái?
What time are you coming?
- Speaker B:
早上七点。
Zǎoshang qī diǎn.
Seven in the morning.
Can you use 一定 correctly?
0 of 3 answeredWhat should you learn next?
- Free HSK 3 level testSee which HSK 3.0 level your vocabulary matches.
- HSK 3 word listEvery word at this level, with examples.
- HSK 3.0 guideHow the nine levels and three bands work.
Related words
- 一yīoneHSK 1
- 会huìcan; to have the skill; to know how toHSK 1
- 要yàoto want; to need; to ask forHSK 1
- 一直yì zhícontinuously; always; all the way throughHSK 3
- 一边yì biāndoing whileHSK 3
- 一样yí yàngsame; equal toHSK 3
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English glosses on this page are adapted from CC-CEDICT, published by MDBG (snapshot 2026-10-23), licensed under CC BY-SA 4.0. Glosses were edited for learners.