Molim vas, govorite što jasnije, jer vas ne razumijem.

Literally, molim vas means I ask you or I beg you.

In everyday Croatian, though, it is very commonly used as a polite please. Depending on context, it can also mean excuse me.

So in this sentence, Molim vas is best understood as a polite request marker: Please ...

Because it has two different jobs:

1. In Molim vas, it is part of the fixed polite expression please.
2. In jer vas ne razumijem, it means you as the object of I don’t understand.

So even though it is the same word, it is not being repeated by accident.

Because Croatian uses vi-forms for polite/formal address, even when speaking to one person.

So:

• govorite = speak, when addressing you formally or you all
• govori = speak, when addressing one person informally

A more informal version of the sentence would be:

Molim te, govori što jasnije, jer te ne razumijem.

Formally, govorite can look the same as the 2nd person plural present tense and the 2nd person plural imperative.

Here, because it follows Molim vas and expresses a request, it is understood as an imperative:

Please speak ...

So learners should read it as a polite command/request, not as you are speaking.

što jasnije means as clearly as possible or as clearly as you can.

Breakdown:

• jasno = clearly
• jasnije = more clearly
• što + comparative = as ... as possible

So:

• govorite jasno = speak clearly
• govorite što jasnije = speak as clearly as possible

Because the structure što + comparative requires the comparative form.

So:

• jasno = clearly
• jasnije = more clearly

In this sentence, jasnije is not really being translated as a simple English comparative. The whole phrase što jasnije works together to mean as clearly as possible.

Here it functions as an adverb, because it describes how someone should speak.

It comes from jasan = clear, but in this sentence it modifies the verb govorite:

Speak how?
More clearly / as clearly as possible.

So even though the form looks like an adjective comparative, here it is being used adverbially.

Because short object pronouns in Croatian often come early in the clause.

After a conjunction like jer = because, it is very natural to place vas before the verb:

jer vas ne razumijem

That is the neutral, natural order here.

jer ne razumijem vas is possible, but it sounds more marked or emphatic, as if stressing you specifically.

jer means because.

It introduces the reason:

Please speak as clearly as possible, because I do not understand you.

Another common option is zato što:

Molim vas, govorite što jasnije, zato što vas ne razumijem.

Both are correct. jer is shorter and very natural here.

Because jer introduces a subordinate clause that gives the reason.

So the sentence is divided into:

• Molim vas, govorite što jasnije
• jer vas ne razumijem

In standard Croatian punctuation, a clause introduced by jer is normally separated by a comma.

Yes, it can be omitted if the meaning is already obvious from context:

Molim vas, govorite što jasnije, jer ne razumijem.

That would mean something like ... because I don’t understand.

However, keeping vas makes it clearer and more direct:

... because I don’t understand you.

So the version with vas is more explicit.

In normal modern Croatian, lowercase vi / vas / vam is standard, even when used politely for one person.

Capitalized forms like Vi, Vas, Vam may be used in very formal letters, emails, or official communication to show extra respect.

So in an ordinary sentence like this, vas with a lowercase v is completely normal.

The informal singular version would be:

Molim te, govori što jasnije, jer te ne razumijem.

Changes:

• vas → te
• govorite → govori

That version is used with friends, family members, children, or anyone you address with informal ti.

The original sentence is polite/formal.