A figyelmeztetés hivatalos.

A is the Hungarian definite article, so it means the.

Hungarian has two forms of the definite article:

• a before a consonant
• az before a vowel

Since figyelmeztetés starts with f, a consonant, the correct form is a figyelmeztetés.

In Hungarian, the verb to be is often left out in the present tense, third person singular and plural when the predicate is a noun or adjective.

So:

• A figyelmeztetés hivatalos. = The warning is official.

Hungarian does not need van here.

But in other persons, the verb appears:

• Hivatalos vagyok. = I am official / formal
• Hivatalos vagy. = You are official / formal

And in past or future, the verb is also expressed:

• A figyelmeztetés hivatalos volt. = The warning was official.

Figyelmeztetés means warning.

It is related to the verb figyelmeztet, meaning to warn.
The noun is formed from that verb, so figyelmeztetés is basically warning / act of warning.

A learner does not need to break it down every time, but it can help to know that Hungarian often builds nouns from verbs in this way.

Hivatalos is an adjective. Here it means official.

In this sentence, it is used as a predicate adjective:

• A figyelmeztetés hivatalos.
• literally: The warning official.
• natural English: The warning is official.

Hivatalos can also appear before a noun:

• hivatalos figyelmeztetés = official warning

So word order helps show the difference between:

• hivatalos figyelmeztetés = a noun phrase
• A figyelmeztetés hivatalos. = a full sentence

Hungarian adjectives do not change for gender, and Hungarian has no grammatical gender like English he/she distinctions in nouns.

So hivatalos stays the same.
It does not need to agree with figyelmeztetés in gender the way adjectives do in some other European languages.

That is normal in Hungarian:

• a hivatalos levél = the official letter
• a hivatalos figyelmeztetés = the official warning

The adjective remains hivatalos.

Yes. Hivatalos a figyelmeztetés is also correct.

Both mean roughly The warning is official, but the word order changes the emphasis.

• A figyelmeztetés hivatalos. = neutral statement; the topic is the warning
• Hivatalos a figyelmeztetés. = stronger focus on official

Hungarian word order is flexible, and it often reflects emphasis or information structure rather than changing the basic meaning completely.

A rough pronunciation guide for English speakers is:

• A ≈ short aw
• figyelmeztetés ≈ FEE-dyel-mez-teh-TAYSH
• hivatalos ≈ HEE-vaw-taw-losh

A few useful points:

• Hungarian stress is usually on the first syllable of each word.
• gy is a soft sound, somewhat like the d in British duke or a softened dy.
• sz is pronounced like English s.
• s by itself is pronounced like English sh.
• é is like ay in say, but pure and shorter.

So the stress pattern is roughly:

• A FI-gyelmeztetés HI-vatalos

You simply add nem before the predicate:

• A figyelmeztetés nem hivatalos. = The warning is not official.

This is the normal way to negate a sentence like this.

You would use a noun phrase, not a full sentence:

• egy hivatalos figyelmeztetés = an official warning

Compare:

• A figyelmeztetés hivatalos. = The warning is official.
• Egy hivatalos figyelmeztetés = an official warning

So the difference is mainly:

• adjective before the noun = describing the noun directly
• adjective after the noun = part of the sentence predicate

Not always. Hivatalos often means official, but depending on context it can also suggest things like:

• formal
• authorized
• recognized in an official capacity

In A figyelmeztetés hivatalos, official is the most natural translation. But learners should know that the exact English wording can shift a little depending on context.