Az idei tanulmányi év hosszú.

In Hungarian, the verb van (to be) is usually omitted in the present tense, 3rd person when you are linking a subject to a noun or adjective.

So:

Az idei tanulmányi év hosszú.
literally works like
The current academic year long.

But in natural English, of course, you say is long.

You would see the verb appear in other situations, for example:

• past: Az idei tanulmányi év hosszú volt. = This academic year was long.
• future: Az idei tanulmányi év hosszú lesz. = This academic year will be long.

Az is the definite article, meaning the.

Hungarian has two forms of the definite article:

• a before a consonant sound
• az before a vowel sound

Since the next word is idei, which begins with a vowel, Hungarian uses az:

• az idei év
• a hosszú év

This is similar to how English uses a and an, although Hungarian is doing this with the, not with the indefinite article.

Good question. Ez a tanulmányi év means this academic year in a direct demonstrative way.

But az idei tanulmányi év uses idei, which means this year’s / of this year / current-year. Because idei is an adjective, not a demonstrative like ez, it normally appears with the article:

• ez a tanulmányi év = this academic year
• az idei tanulmányi év = this year’s academic year / the current academic year

In many real situations, these can refer to the same thing, but the structure is different.

Idei is an adjective meaning this year’s or of this year.

It is used before a noun:

• az idei nyár = this summer / this year’s summer season
• az idei verseny = this year’s competition
• az idei tanulmányi év = this academic year / this year’s academic year

So idei is not a standalone word for this year. It is specifically an adjective used to describe a noun.

If you want to say this year by itself, Hungarian usually uses idén.

Tanulmányi év means academic year or study year.

• tanulmányi = academic / study-related
• év = year

This expression is understandable and grammatical, but it sounds somewhat formal or administrative.

In everyday Hungarian, tanév is often more common for school year / academic year.

So you may also hear:

• Az idei tanév hosszú.

That would usually sound more natural in everyday speech.

Because Hungarian adjectives do not work like adjectives in many Indo-European languages.

A few key points:

• Hungarian has no grammatical gender, so there is no masculine/feminine/neuter agreement.
• In the singular, a predicate adjective like hosszú often stays in its basic form.

So:

• Az év hosszú. = The year is long.

If the subject is plural, the predicate adjective is often plural too:

• Az évek hosszúak. = The years are long.

But in your sentence, év is singular, so hosszú stays singular/basic.

Év is in the nominative case, which is the basic subject form.

Hungarian marks many grammatical roles with suffixes, but the subject often has no ending at all. So the lack of an ending here is normal.

In this sentence:

• az idei tanulmányi év = the subject
• hosszú = predicate adjective

So év appears in its plain dictionary form.

Yes. Hungarian word order is quite flexible, and it often reflects focus or emphasis rather than a rigid English-style pattern.

The version you have:

• Az idei tanulmányi év hosszú.

is a neutral statement.

If you say:

• Hosszú az idei tanulmányi év.

that puts more emphasis on hosszú — as if you are stressing that it is long.

Both are grammatical, but they do not sound exactly the same in terms of emphasis.

Roughly: HOSS-soo

A few useful spelling points:

• Hungarian stress is usually on the first syllable.
• s is pronounced like English sh
• sz is pronounced like English s

So in hosszú, the spelling ssz represents a long s sound.

Also:

• ú is a long vowel, so the last syllable is held a bit longer.

Roughly: TAH-nool-maa-nyi

Helpful pronunciation notes:

• stress on the first syllable: TA
• á is a long a
• ny is like the ny in canyon or Spanish ñ

So the word sounds something like:

TAH-nool-MAA-nyi

Not exact English pronunciation, but close enough to help you start.