Dostava danas kasni.

Dostava is a feminine noun. In everyday Serbian, it often means delivery in the sense of a delivery service, a shipment, or the act of bringing something to someone.

In this sentence, dostava is the subject, so it is in the nominative singular form:

• dostava = delivery

Depending on context, it could mean:

• the delivery itself
• the delivery service
• a specific order that is being delivered

So Dostava danas kasni. can mean something like:

• The delivery is late today
• Delivery is late today
• The delivery service is running late today

Serbian does not use articles like English the and a/an.

So dostava by itself can mean:

• delivery
• the delivery
• a delivery

The exact meaning depends on context.

That is why Dostava danas kasni. naturally works without an article, even though in English you usually need one.

Danas is an adverb, meaning today.

It does not change form here. It simply gives a time reference for the whole sentence:

• danas = today

So the structure is basically:

• Dostava = subject
• danas = time adverb
• kasni = verb

Kasni comes from the verb kasniti, which means:

• to be late
• to run late
• sometimes to be delayed

Kasni is the 3rd person singular present tense form:

• ja kasnim = I am late
• ti kasniš = you are late
• on/ona/ono kasni = he/she/it is late

Since dostava is singular, kasni is the correct form.

In English, we say:

• The delivery is late

In Serbian, the idea is often expressed with the verb kasniti:

• Dostava kasni = The delivery is late / The delivery is running late

So instead of using a separate verb to be plus an adjective, Serbian often uses the verb kasniti directly.

That is very natural Serbian.

Yes, you could say Dostava je kasna danas, but it sounds a bit different.

Compare:

• Dostava danas kasni.
  More natural for saying the delivery is running late today.

• Dostava je danas kasna. or Dostava je kasna danas.
  Grammatically possible, but this uses kasna as an adjective, meaning late.

The verb version with kasni is usually the more idiomatic everyday choice when talking about delayed arrivals or services.

Yes. Serbian word order is more flexible than English word order.

These are all possible, though they may sound slightly different in emphasis:

• Dostava danas kasni.
• Danas dostava kasni.
• Kasni dostava danas. (less neutral, more marked)

The most neutral version here is probably:

• Dostava danas kasni.

If you start with danas, you put more focus on today:

• Danas dostava kasni. = Today, the delivery is late.

Yes. Kasni is present tense.

Serbian uses the present tense here just like English often does:

• The delivery is late today
• The delivery is running late today

So even though it refers to a current situation happening today, the present tense is exactly what you would expect.

Because dostava is singular.

Agreement here works with the subject:

• singular subject → kasni
• plural subject → kasne

For example:

• Dostava kasni. = The delivery is late.
• Isporuke kasne. = The deliveries are late.

So kasni matches singular dostava.

You negate the verb by adding ne:

• Dostava danas ne kasni. = The delivery is not late today.

This is the normal Serbian way to negate present-tense verbs.

They are similar, but not always identical.

• dostava often refers to delivery in an everyday, practical sense, especially bringing food, packages, or orders
• isporuka can also mean delivery, but it may sound a bit more formal or business-like in some contexts

For example:

• Dostava hrane kasni. = Food delivery is late.
• Isporuka robe kasni. = Delivery of goods is late.

In your sentence, dostava sounds very natural.

A simple approximate pronunciation is:

• Dostava danas kasni
• DOH-stah-vah DAH-nahs KAH-snee

A few notes:

• dostava has stress on the first syllable: DO-stava
• danas is roughly DA-nas
• kasni sounds like KAH-snee

The Serbian r is rolled or tapped, but this sentence does not contain it. Serbian pronunciation is generally quite phonetic, so words are usually pronounced close to how they are written.