Prodavac će isporučiti zamenu.

Because Serbian forms the future tense in two common ways:

• ću/ćeš/će... + infinitive
• a short fused form like isporučiću

In your sentence, the pattern is:

• Prodavac = subject
• će = future auxiliary
• isporučiti = infinitive

So Prodavac će isporučiti zamenu means The seller will deliver a replacement.

A native English speaker often expects one future marker like will + verb, and this Serbian pattern is very similar in function.

će is the 3rd person singular form of the future auxiliary, equivalent to will in English for he/she/it.

Here it agrees with prodavac because prodavac is singular:

• ja ću = I will
• ti ćeš = you will
• on/ona/ono će = he/she/it will
• mi ćemo = we will
• vi ćete = you will
• oni/one/ona će = they will

So Prodavac će... literally works like The seller will...

In Serbian, će is a clitic, which means it usually likes to stand in the second position of the sentence or clause.

So:

• Prodavac će isporučiti zamenu. = normal and natural
• Sutra će prodavac isporučiti zamenu. = also possible, because now sutra is first

This “second-position” behavior is very common with Serbian clitics, and it often feels unfamiliar to English speakers.

Isporučiti is the infinitive form of the verb, meaning to deliver.

After the future auxiliary će, Serbian often uses the infinitive:

• će isporučiti = will deliver

So the structure is basically:

• subject + future auxiliary + infinitive + object

This is one of the standard ways to build the future tense in Serbian.

Because zamenu is in the accusative case, which is used here for the direct object.

Base form:

• zamena = replacement

Direct object form:

• zamenu

So:

• Prodavac će isporučiti zamenu. = The seller will deliver a replacement

This is a very important Serbian pattern: nouns change form depending on their role in the sentence.

Zamena is feminine.

You can usually recognize many feminine nouns in Serbian by the -a ending in the nominative singular:

• zamena = nominative singular
• zamenu = accusative singular

That accusative ending -u is very common for feminine nouns ending in -a.

Yes. Prodavac is a masculine singular noun meaning seller or salesman / shop assistant, depending on context.

Its form here is nominative singular, because it is the subject of the sentence:

• Prodavac = the seller
• će isporučiti = will deliver
• zamenu = a replacement

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

So prodavac can mean:

• the seller
• a seller

And zamenu can mean:

• the replacement
• a replacement

Which one is intended depends on context. This is very normal in Serbian.

Yes, but the structure changes.

You can say:

• Prodavac će isporučiti zamenu.
• Isporučiće zamenu. = He/She/It will deliver a replacement

The fused future form like isporučiće is very common when the verb phrase comes first or when there is no expressed subject.

For learners, će + infinitive is often the easiest pattern to recognize and build.

Yes, it matters. Isporučiti is a perfective verb.

In Serbian, perfective verbs usually refer to a completed whole action, so here the idea is not just be delivering, but successfully deliver / complete the delivery.

That fits the sentence well, because delivering a replacement is usually seen as a complete event.

A related imperfective verb would be isporučivati, which would focus more on an ongoing, repeated, or habitual action.

Će is pronounced roughly like chyeh, but the ć sound is softer than English ch.

A rough guide for the whole sentence:

• Prodavac = pro-DA-vats
• će = soft chye
• isporučiti = is-po-roo-CHEE-tee
• zamenu = za-ME-noo

This is only an approximation for English speakers, but it helps at the beginning.

Yes. Serbian word order is more flexible than English because case endings show grammatical roles.

The neutral version is:

• Prodavac će isporučiti zamenu.

But depending on emphasis, you might also hear variations like:

• Zamenu će isporučiti prodavac.
  Emphasis on the replacement
• Prodavac će zamenu isporučiti.
  More marked, often stylistic or emphatic

So the basic meaning can stay the same, but the focus can shift.

Other verbs are possible, but they would change the nuance.

For example:

• dostaviti = deliver, often in a more formal or shipment/document sense
• poslati = send
• doneti = bring

Isporučiti is a very natural choice when talking about supplying or delivering an item, such as a replacement product.

So this sentence sounds appropriate in a customer-service or order-related context.