Combinația este corectă.

Because Romanian often puts the definite article at the end of the noun, not before it as English does.

• combinație = a combination
• combinația = the combination

So the -a here is the feminine singular definite article attached to the noun.

Yes. Combinație is feminine.

You can see that in forms like:

• o combinație = a combination
• combinația = the combination

Because the noun is feminine singular, the adjective also has to match it.

Because Romanian adjectives agree with the noun in gender and number.

Here:

• combinația is feminine singular
• so the adjective must also be feminine singular
• therefore: corectă

Compare:

• băiatul este corect = the boy is correct/fair
• fata este corectă = the girl is correct/fair
• combinația este corectă = the combination is correct

Este is the 3rd person singular form of the verb a fi = to be.

So here it means is:

• combinația = the combination
• este = is
• corectă = correct

Romanian normally keeps the verb to be in sentences like this, unlike some languages where it can be dropped.

Yes. In everyday Romanian, e is a very common shorter form of este.

So these both work:

• Combinația este corectă.
• Combinația e corectă.

Both mean the same thing.
Este sounds a little fuller or slightly more formal; e is very common in normal speech.

A good approximate pronunciation is:

com-bi-NA-tsi-a

A few helpful points:

• the stress is on na
• ț sounds like ts in cats
• ia at the end is pronounced as two vowels: i-a, not like English ya

So it is roughly: kom-bee-NA-tsee-a.

A good approximation is:

ko-REK-tuh

Important detail:

• ă is a Romanian vowel pronounced like a short neutral uh sound, similar to the a in sofa for many English speakers

So corectă is not the same as corecta in spelling or pronunciation.

They are Romanian letters with diacritics.

• ț = pronounced ts
• ă = a short neutral vowel, like uh

So in this sentence:

• combinația has ț = ts
• corectă has ă = uh

These marks are important because they change pronunciation and can distinguish different words or forms.

The normal, neutral order is:

Combinația este corectă.

Romanian does allow some flexibility in word order, but changes can sound more emphatic, poetic, or less neutral. For a learner, the standard pattern is best:

noun + verb + adjective

So this sentence is the most natural basic way to say it.

Not if you want a full sentence meaning The combination is correct.

• Combinația este corectă = a complete sentence
• combinația corectă = the correct combination

Without este, it becomes a noun phrase rather than a full statement.

Usually yes in this sentence, but the exact nuance depends on context.

corect / corectă can mean things like:

• correct
• right
• proper
• sometimes fair or accurate, depending on context

Here, with combinația, it most naturally means correct or right.

The indefinite version would be:

O combinație este corectă.

That means A combination is correct.

Compare:

• combinație = combination
• o combinație = a combination
• combinația = the combination

So Romanian marks definiteness directly on the noun in the definite form.

It is neutral and standard. It works well in both speech and writing.

• Combinația este corectă. = neutral, standard
• Combinația e corectă. = slightly more conversational

Neither version is strange or unnatural.