V průkazu chybí občanství.

Because the preposition v means in (or sometimes inside / within), and after v Czech normally uses the locative case.

So:

• průkaz = document / ID card / pass
• v průkazu = in the document / in the ID card

The ending changes because Czech nouns change form depending on their role in the sentence.

Průkaz is a general word for a document that serves as proof of something: an ID card, pass, permit, or certificate/card.

Depending on context, it could mean things like:

• občanský průkaz = identity card
• řidičský průkaz = driver’s licence
• průkaz pojištěnce = insurance card

So v průkazu chybí občanství could mean that the item citizenship is missing from some official document or card.

Chybí comes from the verb chybět, which means to be missing, to be absent, or to lack.

In this sentence, it means:

• is missing
• is absent
• has been left out

So the structure is not literally someone lacks something, but rather something is missing somewhere.

No. In Czech, with chybět, the thing that is missing is usually the subject, not the object.

So in:

• V průkazu chybí občanství.

the subject is občanství = citizenship

That is why the verb agrees with it.

This is different from how English learners may first expect the sentence to work.

A useful comparison:

• V textu chybí datum. = The date is missing from the text.
• Na formuláři chybí podpis. = A signature is missing on the form.

In all of these, the missing thing is the grammatical subject.

Because the subject občanství is singular.

Občanství is a neuter singular noun, so the verb is singular too:

• občanství chybí = citizenship is missing

If the subject were plural, the verb would also be plural:

• V průkazu chybí údaje. = Information/details are missing from the document.

Here údaje is plural, but in the present tense chybí happens to have the same form for singular and plural, so you tell from the noun.

Usually občanství means citizenship in the legal sense.

In bureaucratic contexts, English translations may sometimes use nationality, especially on forms, but the Czech word itself is primarily about legal citizenship, not ethnicity.

So in an official document, občanství is the field for a person’s citizenship status.

Because Czech has no articles.

English needs words like a and the, but Czech does not. Whether the meaning is definite or indefinite is understood from context.

So:

• V průkazu chybí občanství.

can naturally mean:

• The citizenship entry is missing from the document
• Citizenship is missing from the document

depending on context.

Czech word order is much more flexible than English word order. The sentence begins with V průkazu to set the scene: in the document. Then it gives the verb, and the new or important information comes at the end: občanství.

So this order sounds natural if the important point is what is missing.

Very roughly:

• V průkazu chybí občanství. = neutral, natural
• Občanství v průkazu chybí. = stronger emphasis on citizenship
• Chybí občanství v průkazu. = possible, but less neutral in many contexts

Czech often places the most informative part later in the sentence.

Yes, but it is not exactly the same in tone.

• V průkazu chybí občanství = citizenship is missing; this strongly suggests that it should be there, but it has been omitted
• V průkazu není občanství = there is no citizenship in the document; this is more neutral and simply states absence

So chybí is especially good when something is missing that is expected or required.

Mostly yes. Here v průkazu is best understood as in the document / on the ID card / in the ID record, depending on how naturally English would express it.

Czech often uses v where English might choose in or sometimes on, especially with documents, forms, records, and written content.

So you should learn the Czech expression as natural Czech, not always word-for-word.

Yes. It is a fully complete Czech sentence.

The sentence is about a state or condition:

• something is missing somewhere

No person needs to be named. Czech often expresses things this way, especially in formal or administrative language.

This makes the sentence sound natural in official contexts such as documents, forms, applications, and records.