Poslije sastanka odlazim iz ureda.

Because poslije usually requires the genitive case.

The basic form is sastanak = meeting.
After poslije = after, it changes to the genitive:

• sastanak → nominative
• sastanka → genitive

So:

• poslije sastanka = after the meeting

This is very common in Croatian: certain prepositions automatically require a specific case.

Poslije takes the genitive.

So in this sentence:

• poslije sastanka = after the meeting

More examples:

• poslije ručka = after lunch
• poslije posla = after work
• poslije škole = after school

If you are learning prepositions in Croatian, it helps to memorize them together with the case they require.

Odlazim comes from odlaziti, which means to leave, to go away, or to depart.

So odlazim is usually more specific than just I go. It suggests movement away from a place.

In this sentence:

• odlazim iz ureda = I’m leaving the office / I leave the office

Compare:

• idem u ured = I’m going to the office
• odlazim iz ureda = I’m leaving the office

So odlazim is a very natural choice here because the sentence is about departing from somewhere.

Because iz requires the genitive case.

The dictionary form is:

• ured = office

After iz = from / out of, it becomes:

• ureda = genitive

So:

• iz ureda = from the office / out of the office

This is another example of a Croatian preposition controlling the case of the noun.

Iz takes the genitive.

In this sentence:

• iz ureda = from the office

Other examples:

• iz kuće = from the house
• iz grada = from the city
• iz škole = from school

A useful pattern to remember is:

• iz + genitive = movement out of / from inside
• s(a) + genitive can mean movement from off a surface
• od + genitive often means from in a more general sense

Croatian does not have articles like a, an, and the.

So:

• sastanak can mean a meeting or the meeting
• ured can mean an office or the office

The exact meaning depends on context.

In poslije sastanka odlazim iz ureda, English naturally translates it as after the meeting, I’m leaving the office, but Croatian does not need separate words for the.

Yes. Croatian word order is more flexible than English word order because the cases show grammatical relationships.

The original sentence:

• Poslije sastanka odlazim iz ureda.

is very natural.

You could also hear:

• Odlazim iz ureda poslije sastanka.
• Iz ureda odlazim poslije sastanka.

These versions are grammatically possible, but they may shift emphasis slightly.

The original order sounds neutral and clear:

1. time expression first: Poslije sastanka
2. verb: odlazim
3. place/source: iz ureda

That structure is very common.

Formally, odlazim is present tense: I leave / I am leaving.

But in Croatian, present tense can sometimes refer to a planned future action, especially when the timing is already clear.

Because the sentence begins with poslije sastanka = after the meeting, the meaning can naturally be understood as:

• After the meeting, I’m leaving the office
• After the meeting, I leave the office
• even After the meeting, I’ll leave the office, depending on context

So the verb form is present, but the situation may refer to the near future.

Both can relate to movement, but they are not identical.

• idem = I go
• odlazim = I leave / I go away

In this sentence, odlazim is better because the focus is on leaving a place:

• odlazim iz ureda = I’m leaving the office

If you said idem iz ureda, it would sound less natural in many contexts. Croatian often prefers odlaziti when someone is departing from somewhere.

So a good rule is:

• use ići for general going
• use odlaziti when the idea is leaving / departing

Yes. Nakon also means after, and it also takes the genitive.

So you can say:

• Poslije sastanka odlazim iz ureda.
• Nakon sastanka odlazim iz ureda.

Both are correct.

Very roughly:

• poslije often sounds a bit more everyday and conversational
• nakon can sound slightly more formal or neutral

But in many situations they are interchangeable.

Yes, poslije is the normal Croatian form.

You may also notice related forms in neighboring standards:

• poslije — standard Croatian
• posle — common in Serbian

So if you are learning Croatian, poslije is the form to use.

Because the verb ending already tells you the subject.

• odlazim = I leave / I am leaving

The ending -im shows 1st person singular, so ja is not necessary.

Croatian often leaves subject pronouns out unless they are needed for emphasis or contrast.

So:

• Odlazim iz ureda. = I’m leaving the office.
• Ja odlazim iz ureda. = I’m the one leaving the office / stronger emphasis on I

In your sentence, leaving out ja is the most natural choice.