Quick Answer
In Vietnamese, hãy is used for positive commands or encouragement (Do it!), while đừng and chớ are negative imperatives used to tell someone not to do something. Đừng is the standard way to say 'don't' in daily life, whereas chớ is more formal, literary, or used for serious warnings.
Comparison Table
| Word | Meaning | Usage Context | Nuance |
|---|---|---|---|
| Hãy | Do / Please / Let's | Encouragement, formal requests, or advice. | Positive, polite, and motivating. |
| Đừng | Don't | Common daily prohibition or advice. | Neutral and versatile for all situations. |
| Chớ | Don't / Must not | Strict warnings, literature, or older proverbs. | Stronger, more serious, and slightly formal. |
Detailed Explanation
Understanding these three words is key to giving directions and advice in Vietnamese. While they all appear at the beginning of a verb phrase, their emotional weight differs significantly.
1. Hãy (The Positive Push)
Hãy is placed before a verb to create a command or a strong recommendation. In Southern Vietnamese speech, people often omit 'hãy' and just add 'đi' at the end of the sentence to make it sound natural, but 'hãy' remains essential for formal writing and polite encouragement.
For learners with a background in Japanese or Chinese, you can think of hãy as similar to the function of 'kudasai' or 'qǐng', though its grammatical position is different.
2. Đừng (The Standard 'Don't')
This is your go-to word for 'don't'. It is used in about 90% of daily situations. Whether you are telling a friend not to worry or a child not to run, đừng is the correct choice. It can be paired with nữa at the end of the sentence to mean 'Stop doing (something) anymore'.
3. Chớ (The Strong Warning)
Chớ is less common in casual Southern conversation but frequently found in Northern dialects, literature, and formal signs. It carries a sense of 'be sure not to' or 'must not'. You will often see it in traditional proverbs or when someone is giving very serious life advice. It feels more 'old-school' and authoritative than đừng.
Example Pairs
Hãy ăn thử món này đi.
Please try eating this dish.
Đừng ăn món này, nó cay lắm.
Don't eat this dish; it is very spicy.
Hãy tin vào bản thân mình.
Do believe in yourself.
Đừng tin những gì anh ta nói.
Don't believe what he says.
Hãy cẩn thận khi lái xe.
Be careful when driving.
Chớ chủ quan khi đi đường xa.
Must not be subjective/careless when traveling far.
Hãy nói cho tôi sự thật.
Please tell me the truth.
Đừng nói dối tôi nữa.
Don't lie to me anymore.
Common Patterns
Hãy + Verb + đi!: A very common way to encourage someone to start an action immediately. Example: Hãy làm đi! (Just do it!)
Đừng + Verb + nữa!: Tells someone to stop an action they are currently doing. Example: Đừng khóc nữa! (Stop crying!)
Chớ có + Verb: Adds extra emphasis to a warning. Example: Chớ có vào đó! (Don't you dare go in there!)
Common Mistakes
Mistake 1 — Using "hãy" in questions
Vietnamese learners often try to use 'hãy' to ask 'Should I do something?'. 'Hãy' is only for commands and advice, not for asking questions.
❌ Tôi hãy mua cái này không?
✅ Tôi có nên mua cái này không?
Why it's wrong: 'Hãy' cannot be used with 'không' to form a question. Use 'nên' (should) instead.
Mistake 2 — Incorrect word order with negation
Some learners put the subject after 'đừng' because they translate directly from English 'Don't you...'.
❌ Đừng bạn đi ra ngoài.
✅ Bạn đừng đi ra ngoài.
Why it's wrong: The subject (Bạn) should come before 'đừng' or be omitted entirely for a direct command.
Mistake 3 — Using "chớ" in very casual settings
Using 'chớ' while joking with friends in a coffee shop can sound unnaturally stiff or dramatic.
❌ Chớ quên mua cà phê cho tôi nhé!
✅ Đừng quên mua cà phê cho tôi nhé!
Why it's wrong: While grammatically correct, 'chớ' is too heavy for a simple favor. 'Đừng' is much more natural here.
Related Grammar Points
- mặc dù...nhưng vs tuy...nhưng — Although (Two Forms) (Comparison B1)
- mà vs để — Relative Clause vs Purpose (Comparison B1)
- nhé vs nhỉ — Confirmation vs Seeking Agreement (Comparison B1)
- đi vs nào — Urging Particles Compared (Comparison B1)
- không những...mà còn vs chẳng những...mà còn — Not Only (Register) (Comparison B1)
- thôi vs đấy — Enough vs Informing (Comparison B1)
Quick Quiz
Fill in the blank with hãy or đừng:
Trời sắp mưa rồi, _____ quên mang theo ô nhé.
Hint: The speaker is reminding someone not to forget something.
Answer
Correct answer: đừng. The full sentence is: "Trời sắp mưa rồi, đừng quên mang theo ô nhé." (It's about to rain, don't forget to bring an umbrella.)
Fill in the blank with hãy or đừng:
Mọi người _____ giữ yên lặng trong thư viện.
Hint: This is a polite request or instruction for a positive action.
Answer
Correct answer: hãy. The full sentence is: "Mọi người hãy giữ yên lặng trong thư viện." (Everyone, please keep quiet in the library.)
Fill in the blank with hãy or chớ:
_____ thấy giàu mà tham, _____ thấy nghèo mà khinh.
Hint: This is a traditional proverb giving moral advice.
Answer
Correct answer: chớ. The full sentence is: "Chớ thấy giàu mà tham, chớ thấy nghèo mà khinh." (Do not be greedy when seeing wealth, do not look down on others when seeing poverty.)