Mindez fontos.

Mindez means all this, all of this, or everything mentioned here/so far.

It is used to refer back to a group of things, facts, events, or ideas that have just been mentioned. So in Mindez fontos, the speaker is saying that all those things are important.

A rough breakdown is:

• ez = this
• mind = all

Together, mindez works like a single word meaning all this.

In Hungarian, the verb to be is often left out in the present tense, third person.

So:

• Mindez fontos. = All this is important.

There is no need to say a separate word for is here.

This is very common in Hungarian:

• Ez jó. = This is good.
• A ház nagy. = The house is big.

But in other persons, the verb does appear:

• Fontos vagyok. = I am important.
• Fontos vagy. = You are important.

Grammatically, mindez behaves as singular, even though its meaning refers to multiple things.

That is why the adjective is singular too:

• Mindez fontos. = All this is important.

Not fontosak.

This is similar to how English can use a singular-looking structure for a whole set of things, depending on the wording. In Hungarian, mindez is treated as one collective pronoun.

Fontos is an adjective, meaning important.

In Mindez fontos, it functions as the predicate adjective:

• mindez = subject
• fontos = important

Hungarian adjectives do not change for gender, and in this sentence fontos stays in its basic form.

It is close in meaning, but not exactly the same in structure or feel.

• Mindez fontos. = All this is important.
• Ez mind fontos. = literally something like This all is important or All of this is important

Both can refer to a whole set of things, but mindez is a fixed, compact pronoun and often sounds a bit more written, formal, or summary-like.

Mindez fontos is especially natural when wrapping up a list of facts or arguments.

Yes, but it can sound a little more formal, written, or summarizing than simpler alternatives.

For example, in everyday speech people might also say:

• Ez mind fontos.
• Minden fontos ebből. in some contexts
• Ez mind lényeges. with a different adjective

Mindez is perfectly normal Hungarian, but it often appears when someone is drawing a conclusion from previous information.

Yes, but changing the word order changes the emphasis.

The neutral version is:

• Mindez fontos. = All this is important.

If you say:

• Fontos mindez.

that can sound more marked or literary, with extra emphasis on important.

Hungarian word order is strongly connected to focus and emphasis, so the most natural basic order here is Mindez fontos.

A simple pronunciation guide is:

• mindez ≈ MEEN-dez
• fontos ≈ FON-tosh

Some helpful notes:

• Hungarian stress is normally on the first syllable of each word.
• s in Hungarian is pronounced like English sh.
  • So fontos sounds like fon-tosh, not fon-tos.
• The o is a clear short o, not a diphthong.

Because the subject here is mindez, and that pronoun is grammatically singular.

Compare:

• Mindez fontos. = All this is important.
• Ezek fontosak. = These are important.

If you use ezek (these), you need the plural adjective/predicate form fontosak.
But mindez is a single collective pronoun, so it takes fontos.

When Hungarian cannot omit the verb to be, it appears normally.

For example:

• Mindez fontos volt. = All this was important.
• Mindez fontos lesz. = All this will be important.

So the zero-copula rule only applies in the present tense, third person.

Yes, very often.

In fact, mindez is commonly used for:

• facts
• arguments
• events
• circumstances
• information just mentioned

So in many cases it does not mean physical this stuff right in front of you, but rather all of what I just said / all these points / all these circumstances.

That is one reason it is so common in written or explanatory language.

Yes, absolutely.

Even though it is very short, it is a full natural Hungarian sentence:

• Mindez = subject
• fontos = predicate adjective
• the present-tense is is understood

Hungarian often allows very compact sentences like this.

Yes. Hungarian has a few related forms built in a similar way:

• mindez = all this
• mindaz = all that
• minden = everything or every
• ez = this
• az = that

A useful contrast:

• Mindez fontos. = All this is important.
• Mindaz fontos. = All that is important.

So mindez points to something conceptually near the speaker, while mindaz points to something more distant.