Gặp ở đâu?

Vietnamese often drops the subject when it is obvious from context. In a real conversation, Gặp ở đâu? can naturally mean things like:

• Where should we meet?
• Where do we meet?
• Where did you meet (someone)?

The listener figures out the missing subject from the situation. If you want to make it explicit, you could say:

• Mình gặp ở đâu? = Where shall we meet?
• Chúng ta gặp ở đâu? = Where do we meet?
• Bạn gặp anh ấy ở đâu? = Where did you meet him?

So the short version is normal, especially in casual speech or texting.

Gặp means to meet or to encounter.

Depending on context, it can refer to:

• arranging to meet someone
• meeting someone by chance
• seeing someone in a certain place

In Gặp ở đâu?, it is usually understood as meet where? or where did you meet?

Vietnamese verbs are often quite flexible, so the exact English translation depends on the conversation.

Ở is a very common word related to location, often meaning at, in, or to be at depending on the sentence.

In Gặp ở đâu?, ở đâu means where / at where.

So the structure is basically:

• gặp = meet
• ở đâu = where / at what place

Very literally, it feels like meet at where?
Natural English turns that into Where do/did ... meet?

You will see ở đâu very often in Vietnamese:

• Bạn ở đâu? = Where are you?
• Mua ở đâu? = Where do you buy it?
• Làm ở đâu? = Where do you work?

Yes. Vietnamese question words usually stay in the position where the answer would go, rather than moving to the front like in English.

Compare:

• Statement idea: Gặp ở công viên. = Meet at the park.
• Question: Gặp ở đâu? = Meet where?

So instead of fronting where, Vietnamese keeps đâu in the place of the location.

This is very typical:

• Bạn ăn gì? = What do you eat?
• Bạn đi đâu? = Where are you going?
• Anh gặp ai? = Who did you meet?

Yes. By itself, Gặp ở đâu? does not clearly show tense.

Vietnamese does not require tense marking the way English does. Time is often understood from context or shown with time words and particles.

So Gặp ở đâu? could mean:

• Where are we meeting?
• Where should we meet?
• Where did you meet?

If you want to make it clearer, you can add context:

• Mai gặp ở đâu? = Where shall we meet tomorrow?
• Hôm qua gặp ở đâu? = Where did you meet yesterday?
• Tối nay gặp ở đâu? = Where are we meeting tonight?

Yes, especially in casual conversation, texting, or when the situation is already clear.

However, fuller versions are also common and can sound more complete:

• Mình gặp ở đâu? = Where shall we meet?
• Gặp nhau ở đâu? = Where shall we meet each other?
• Chúng ta gặp nhau ở đâu? = Where shall we meet?

Adding nhau makes it more clearly mutual: meet each other.

So:

• Gặp ở đâu? = short, casual, context-dependent
• Gặp nhau ở đâu? = clearer that two people are meeting each other

Nhau often adds the sense of each other / one another.

So:

• Gặp ở đâu? = Meet where?
• Gặp nhau ở đâu? = Where do we meet each other?

In many situations, nhau is optional because the mutual meaning is already obvious. If two people are arranging a meeting, Gặp ở đâu? is often enough.

But if you want to be clearer or more natural in some contexts, Gặp nhau ở đâu? is very common.

Both can ask about place, but they feel a little different.

• đâu = where
• chỗ nào = which place / what place

So you may hear:

• Gặp ở đâu?
• Gặp ở chỗ nào?

Both are natural.
Ở đâu is very common and compact.
Ở chỗ nào can sound a little more specific, like asking for the exact place.

You answer with a location, often using ở as well.

Examples:

• Ở quán cà phê. = At the coffee shop.
• Ở cổng trường. = At the school gate.
• Ở nhà mình nhé. = At my house.
• Ở công viên gần đây. = At the nearby park.

In casual speech, Vietnamese often allows short answers, just like English:

• Quán cà phê nhé.
• Công viên đi.

The tones matter:

• gặp — heavy/falling glottalized tone (nặng)
• ở — broken rising tone (ngã in Southern speech often merges somewhat with hỏi depending on accent)
• đâu — level or mid tone (ngang)

A rough guide for an English speaker:

• gặp: sounds short and stopped
• ở: starts and has a kind of dip/break
• đâu: smoother and more level

Also note:

• gặp ends with -p, which is unreleased in Vietnamese
• đâu has the đ sound, which is like a regular d sound, not English th

It is natural, but it is quite brief. Whether it feels polite depends on context and relationship.

Among friends, it is completely normal.
In a more polite or formal situation, you might say:

• Mình gặp nhau ở đâu ạ?
• Chúng ta gặp ở đâu ạ?
• Xin hỏi gặp ở đâu ạ?

Adding ạ makes the sentence softer and more polite.
So the short form is not rude by itself, but it is definitely casual.