A közönség már itt vár.

A is the Hungarian definite article, meaning the.

So:

• a közönség = the audience

Hungarian has two forms of the definite article:

• a before consonant sounds
• az before vowel sounds

Since közönség starts with a consonant, it takes a.

It is singular.

Közönség means audience, which is a collective noun: it refers to many people, but grammatically it behaves as one unit.

That is why the verb is singular too:

• A közönség vár. = The audience is waiting.

Not várnak, because Hungarian treats közönség as a singular noun here.

Vár is the 3rd person singular present tense form of the verb várni (to wait).

So:

• várni = to wait
• vár = he/she/it waits

Since the subject is a közönség and that noun is singular, vár is the correct form.

Hungarian often uses the simple present where English uses either:

• waits
• is waiting

So:

• A közönség vár. can mean
  
  • The audience waits
  • The audience is waiting

In natural English, is waiting is usually the better translation here, but Hungarian does not need a separate verb like is to express that.

Már usually means already.

It adds the idea that something has happened or is true by now or sooner than expected.

So:

• A közönség már itt vár. = The audience is already waiting here.

Depending on context, már can sometimes sound like:

• already
• by now
• now already

Itt means here.

In this sentence:

• A közönség már itt vár.
• literally: The audience already here waits

Hungarian word order is more flexible than English word order. The placement of itt is natural and neutral here.

The sentence flows as:

• subject: A közönség
• time-related adverb: már
• place adverb: itt
• verb: vár

Even though the order is different from English, the meaning is straightforward.

Yes. Hungarian word order is flexible, and changing it often changes the focus or emphasis, not the basic meaning.

For example:

• A közönség már itt vár.
  Neutral: The audience is already waiting here.

• Itt vár már a közönség.
  More emphasis on here: It’s here that the audience is already waiting.

• Már itt vár a közönség.
  Slight emphasis on already here

So the original sentence is a normal, natural way to say it, but other orders are possible depending on what the speaker wants to highlight.

Hungarian normally does not use a subject pronoun unless it is needed for emphasis or contrast.

Since the subject is already clearly expressed by a közönség, nothing else is needed.

Hungarian avoids unnecessary pronouns much more than English does.

Because Hungarian follows the grammatical form of the noun, not the real-world number of people inside it.

Közönség is grammatically singular, so the verb stays singular:

• A közönség vár.

This is similar to English in many cases:

• The audience is waiting.

Although in some varieties of English people may sometimes say the audience are waiting, Hungarian would normally keep it singular here.

It is:

• present tense
• 3rd person singular
• indefinite conjugation

The verb várni can appear in different conjugations in Hungarian. Here it is indefinite because there is no direct object being waited for in the sentence.

Compare:

• A közönség vár. = The audience is waiting.
• A közönség a műsort várja. = The audience is waiting for the show.

In the second sentence, várja is used because there is a definite object: a műsort.

A helpful approximate pronunciation is:

• kö-zön-shayg

More carefully:

• kö has the Hungarian ö, a rounded vowel that English does not really have
• zs is like the s in measure
• ség sounds roughly like shayg, with a long é

A rough IPA version is:

• közönség /ˈkøzønʃeːɡ/

A few other pronunciation notes for the whole sentence:

• már has a long á, like a longer open a
• itt has a short, sharp i
• vár also has long á

It is neutral and standard.

There is nothing especially formal or especially casual about:

• A közönség már itt vár.

It would fit naturally in everyday speech, announcements, narration, or written standard Hungarian.