Ennek nincs értelme.

Ennek is the -nek form of ez (this). In this sentence, it means something like of this or for this.

Hungarian often uses this -nak/-nek form for the possessor in expressions that English translates with have. So Ennek nincs értelme is literally closer to This has no sense or There is no sense to this.

Because nincs is the special negative form of van (is / there is / has in some structures).

So:

• van = is / there is
• nincs = is not / there isn't

In Hungarian, you normally do not say nem van for simple existence or possession. So:

• Van értelme. = It makes sense.
• Nincs értelme. = It doesn’t make sense.

Because értelme is a possessed form. The base noun is értelem (sense, meaning, point), and értelme means its sense / its meaning.

Hungarian often expresses X has Y with a possession structure rather than with a verb like English have. So the sentence is built like this:

• ennek = of this / to this
• nincs = there is not
• értelme = its sense / meaning

So the whole sentence is literally something like Of this, there is no meaning/sense.

Formally, -nak/-nek is usually taught as the dative ending. But in sentences like this, it marks the possessor, which feels a lot like a genitive function in English.

So in:

• Ennek nincs értelme

ennek is the possessor: this is the thing whose sense is being talked about.

That is why English speakers often find it helpful to think of it as of this, even though Hungarian grammar usually labels -nak/-nek as dative.

Because Hungarian does not need one here.

English often says:

• It has no meaning
• This makes no sense

Hungarian expresses this through the possessed noun structure instead:

• Ennek nincs értelme

The idea of it is already built into értelme (its sense) and into ennek (of this / this), so no separate pronoun is necessary.

Because in this kind of existence/possession sentence, Hungarian normally does not use an article.

Compare:

• Van értelme. = It makes sense.
• Nincs értelme. = It doesn’t make sense.

This is the natural idiomatic pattern. If you added an article, it would usually change the structure or meaning and would not sound like the normal expression here.

In this sentence, értelem is best understood as sense or point.

So Ennek nincs értelme can match English expressions like:

• This makes no sense.
• There’s no point to this.
• This has no meaning.

The exact English translation depends on context. Hungarian értelem is fairly broad here, so it can overlap with several English words.

Yes, it is a very normal and idiomatic way to say it.

A close alternative is:

• Ez értelmetlen.

That means This is meaningless / senseless / illogical. It is similar, but not always identical in tone.

• Ennek nincs értelme often feels like This makes no sense or There’s no point in this.
• Ez értelmetlen is more like calling something senseless or meaningless directly with an adjective.

The version Ennek nincs értelme is the most neutral and natural order.

Hungarian word order is flexible, but changes usually affect emphasis or focus. You may also hear other orders in context, but they are less neutral.

For a learner, it is best to remember:

• Ennek nincs értelme.

That is the safest standard form.

Yes. Ennek nincs semmi értelme is also correct and means This makes absolutely no sense or There is no sense in this at all.

Compared with:

• Ennek nincs értelme

the version with semmi is stronger and more emphatic.

So:

• Ennek nincs értelme. = This makes no sense.
• Ennek nincs semmi értelme. = This makes absolutely no sense.

Nincs is pronounced roughly like nyinch.

A few helpful points:

• the first sound is like Hungarian ny, similar to the ny in British English new for some speakers, but more distinctly palatal
• cs sounds like ch in church

So a rough learner-friendly pronunciation for the whole sentence is:

EN-nek nyinch AIR-tel-me

That is only approximate, but it is a useful starting point.