không cần

Need Not

Level 2

Không cần means "do not need to" or "no need." It is used to show that an action or object is not necessary.

How It Works

1. With Verbs (Lack of Obligation)
When placed directly before a verb, it acts as a modal verb meaning "need not" or "don't need to." Vietnamese speakers frequently use không cần phải + [verb] alongside simply không cần to express this lack of obligation.
Example: Tôi không cần đi. (I don't need to go.)
Example: Bạn không cần phải xin lỗi. (You don't need to apologize.)

2. With Nouns (Lack of Requirement)
Unlike some auxiliary verbs, it can act as a main verb taking a direct object.
Example: Tôi không cần tiền. (I don't need money.)

3. Declining Offers
It is a standard phrase for politely declining help, services, or unwanted items (though for declining food or hospitality, dạ thôi or không, cảm ơn are preferred). While a plain không cần is perfectly acceptable among close friends, to avoid sounding blunt with strangers or elders, you should pair it with polite words or softening particles like đâu or ạ.
Example: Dạ, không cần đâu ạ. (No need.)

Important Distinction: Do not confuse không cần (lack of internal necessity: "don't need to") with không phải + [verb] (lack of external obligation: "do not have to") or không được (prohibition: "must not"). Note that không phải (là) + [noun] simply means "is not".

Note on Spoken Vietnamese: In casual Southern speech, không is often pronounced as hông (hông cần). You will also frequently hear the word khỏi or the combination khỏi cần used as an alternative. While khỏi as a standalone refusal is especially common in the South, it is used nationwide in set phrases like khỏi phải nói (needless to say). It can be used in both casual and polite contexts (by adding polite words like Dạ khỏi).

Examples (4)

  1. Anh không cần lo.

    You do not need to worry.

    Word by Word: Brother not need worry.

    Used directly before a verb to remove the necessity of an action.

  2. Tôi không cần một quyển từ điển.

    I don't need a dictionary.

    Word by Word: I not need one classifier dictionary.

    Used directly before a noun phrase, functioning as a main transitive verb.

  3. Bạn không cần phải đến sớm.

    You don't have to come early.

    Word by Word: Friend not need must arrive early.

    Often combined with 'phải' (must) to explicitly mean 'do not have to'.

  4. Dạ, không cần đâu ạ.

    No need.

    Word by Word: Polite-yes, not need at-all polite-particle.

    The standard, polite way to decline an offer or assistance. Note that it does not explicitly contain the word for 'thank you'.

Common Mistakes

  • Confusing a lack of obligation ('don't need to') with a strict prohibition ('must not').

    Bạn không cần hút thuốc ở đây.
    Bạn không được hút thuốc ở đây.

    Learners sometimes use 'không cần' when they want to forbid an action. However, 'không cần' simply means 'need not' or 'don't have to'. To express a strict prohibition ('must not'), you must use không được.

  • Using 'không cần' to decline hospitality (like food or drinks).

    Không cần, tôi no rồi.
    Dạ thôi, tôi no rồi.

    While 'không cần' is great for declining help or services, using it to refuse food, drinks, or hospitality sounds dismissive and blunt. In these situations, it is much more natural and polite to use 'dạ thôi' or 'không, cảm ơn'.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

không cầnLevel 2Need Not

Learn This First

To understand 'không cần' (need not), a learner must first understand how to negate a basic action using 'không' and the meaning of the base verb 'cần' (to need). Because Vietnamese grammar is isolating, the pattern is formed by simply combining the negation particle with the verb.

Words in This Pattern