Parcul este luminos.

Because -ul is the definite article attached to the end of the noun.

• parc = park / a park
• parcul = the park

Romanian usually puts the definite article at the end of the noun rather than before it, unlike English.

So:

• Parcul este luminos. = The park is bright.

Parc is a neuter noun in Romanian.

That matters because Romanian neuter nouns behave:

• like masculine in the singular
• like feminine in the plural

So in the singular you get forms like:

• un parc = a park
• parcul = the park

And in the plural:

• două parcuri = two parks
• parcurile = the parks

In this sentence, the noun is singular, so it follows the masculine/neuter singular pattern.

Este is the verb to be, in the 3rd person singular form, meaning is.

So the sentence structure is:

• Parcul = the subject
• este = is
• luminos = bright

This is a very common Romanian pattern:

• Casa este mare. = The house is big.
• Copilul este fericit. = The child is happy.

Yes. E is a very common short form of este in everyday Romanian.

So both are correct:

• Parcul este luminos.
• Parcul e luminos.

The version with este sounds a little more full or careful, while e is more natural in casual speech.

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

Here, parc is a neuter noun, and in the singular neuter behaves like masculine. So the adjective takes the masculine/neuter singular form:

• luminos

Compare:

• parcul luminos = the bright park
• camera luminoasă = the bright room

So:

• masculine/neuter singular: luminos
• feminine singular: luminoasă
• masculine plural: luminoși
• feminine/neuter plural: luminoase

Usually luminos means bright, light-filled, or well lit.

In a sentence like Parcul este luminos, the most natural meaning is that the park seems bright, full of light, or visually light and open.

It can also be used more figuratively in some contexts, but here the basic physical meaning is the one learners should focus on.

If you wanted to stress that something is specifically illuminated by lights, Romanian might also use expressions like:

• bine luminat = well lit

So luminos and bine luminat can overlap, but they are not always exactly the same in nuance.

This is the most neutral and standard word order:

• subject + verb + adjective

So Parcul este luminos is the normal way to say it.

Romanian does allow some flexibility for emphasis, but beginners should stick with this order.

For example, Luminos este parcul is possible only in marked or poetic contexts, not as the normal everyday version.

No. Luminos is an adjective, and in this sentence it is used after the verb este as a predicate adjective.

So Romanian does not put an article before it here.

Compare:

• Parcul este luminos. = The park is bright.

But when the adjective is directly attached to a noun, you can have:

• parcul luminos = the bright park
• un parc luminos = a bright park

So the article belongs with the noun, not separately before the adjective in this sentence.

A simple learner-friendly pronunciation guide is:

• Parcul ≈ PAR-kool
• este ≈ YES-te
• luminos ≈ loo-mee-NOS

Stress is roughly:

• PAR-cul
• ES-te
• lu-mi-NOS

A few helpful notes:

• c in parcul is a hard k sound
• u is a clear oo sound
• e in este is pronounced, not silent
• s in luminos is a normal s, not z

In standard Romanian, no — you normally keep the verb to be in sentences like this.

So you say:

• Parcul este luminos.
• Parcul e luminos.

But not simply:

• Parcul luminos. unless you mean the bright park as a noun phrase, not a full sentence

That is an important difference:

• Parcul este luminos. = full sentence
• parcul luminos = noun phrase

In the plural, both the noun and the adjective change.

You would get:

• Parcurile sunt luminoase. = The parks are bright.

Why?

• parcurile = the parks
• sunt = are
• luminoase = bright, plural form used with neuter plural nouns

Since neuter nouns act like feminine in the plural, the adjective takes the feminine/plural-type form luminoase.