A döntés jó.

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

In A döntés jó, a döntés means the decision.

A quick note:

• a is used before many consonants
• az is used before vowels

So:

• a döntés = the decision
• az autó = the car

In Hungarian, the verb to be is usually left out in the 3rd person singular and plural present tense when you are simply saying that something is something or is some quality.

So English:

• The decision is good.

Hungarian:

• A döntés jó.

There is no need for van here.

Compare:

• Én jó vagyok. = I am good.
• Te jó vagy. = You are good.
• A döntés jó. = The decision is good.

So the missing is is completely normal.

Döntés means decision. It is a noun.

In this sentence, it is the subject:

• A döntés = the decision

It comes from the verb dönteni, which means to decide.

A very useful pattern:

• dönteni = to decide
• döntés = decision

This is similar to English decide → decision.

Jó means good.

In A döntés jó, it describes the subject:

• A döntés = the decision
• jó = good

So the whole sentence means:

• The decision is good.

Jó is a very common word in Hungarian and can also appear in many other meanings depending on context, such as fine, okay, or well in some situations.

Because here jó is not part of a noun phrase like the good decision. It is the predicate adjective in a full sentence:

• A döntés jó. = The decision is good.

But if you want to say the good decision, then the adjective comes before the noun:

• A jó döntés = the good decision

So compare carefully:

• A döntés jó. = The decision is good.
• A jó döntés = The good decision

This is a very important difference in Hungarian.

Yes. Jó a döntés is also grammatical.

Both can mean The decision is good, but the emphasis is a little different.

• A döntés jó. → neutral, straightforward statement
• Jó a döntés. → puts more focus on good

Hungarian word order often helps show focus or emphasis, not just basic grammar.

So if someone is wondering whether the decision is acceptable, Jó a döntés might sound a bit more like The decision is good / The decision is fine with focus on the evaluation.

A simple pronunciation guide:

• a ≈ short aw / uh
• döntés ≈ DUEN-taysh (approximate only)
• jó ≈ yoh

More carefully:

• ö is a rounded front vowel, somewhat like German ö or French eu
• é is a long ay-like sound
• j in Hungarian is pronounced like English y
• ó is a long o

Also, Hungarian stress is usually on the first syllable of the word:

• DÖN-tés
• JÓ

In Hungarian, accent marks are very important. They are not optional.

In this sentence:

• ó in jó shows a long vowel
• é in döntés also shows a long vowel
• ö is a different vowel from o

So these marks affect pronunciation and can also distinguish different words.

For example:

• o and ó are not the same
• e and é are not the same
• ö and o are not the same

When learning Hungarian, it is best to treat accented vowels as full, separate vowels, not just decorative marks.

Yes: döntés is in the basic dictionary form, which is the nominative.

There is no special ending on it here because it is the subject of the sentence:

• A döntés jó. = The decision is good.

Hungarian often adds case endings to nouns, but in this sentence none is needed.

So:

• döntés = decision
• a döntés = the decision

Yes, it is very close in meaning, but it is a bit more specific or pointed.

• A döntés jó. = The decision is good.
• Ez a döntés jó. = This decision is good.

Adding ez means this, so now you are talking about one particular decision more explicitly.

This is useful if you are comparing several decisions:

• Ez a döntés jó, de az nem.
• This decision is good, but that one isn’t.

You would usually add nem before the adjective:

• A döntés nem jó. = The decision is not good.

This is the normal way to negate the sentence.

Compare:

• A döntés jó. = The decision is good.
• A döntés nem jó. = The decision is not good.

So nem is the basic Hungarian word for not.