Ghișeul este deschis.

Ghișeu is the basic dictionary form, meaning counter / service window / booth.

In the sentence, ghișeul means the counter / the window. Romanian usually adds the definite article to the end of the noun instead of putting a separate word like the in front.

• ghișeu = a counter / a window
• ghișeul = the counter / the window

So the -l at the end is part of the definite form.

A simple English-friendly approximation is:

ghee-SHEH-ool

More exactly:

• gh before i/e keeps a hard g sound, like in get
• i here is part of that spelling and helps give the hard g
• ș is pronounced sh
• eu is pronounced roughly like eh-oo together

So:

• ghișeu ≈ ghee-SHEH-oo
• ghișeul ≈ ghee-SHEH-ool

Also, ș is always sh, never like ordinary English s.

In Romanian, g before e or i would normally sound like the j in gem.

To keep the hard g sound, Romanian writes gh before e or i.

So:

• ge / gi = soft sound, like j
• ghe / ghi = hard g

That is why ghișeu begins with gh.

It usually means a service counter, ticket window, office window, or reception-style window where a customer speaks to an employee through a counter or glass opening.

So it is not just any random window. In many contexts, it is the kind of place where you buy tickets, submit documents, pay bills, and so on.

Because this sentence means The counter is open, not the open counter.

Here, deschis is not directly modifying the noun inside a noun phrase. It comes after the verb este and works as a predicate adjective:

• Ghișeul este deschis. = The counter is open.

If you put the adjective directly with the noun, you would be making a phrase like the open counter, which is a different structure.

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

So here:

• este = is

The sentence structure is very straightforward:

• Ghișeul = the counter
• este = is
• deschis = open

So literally: The counter is open.

Yes. That is very common.

• Ghișeul este deschis. = more neutral/full
• Ghișeul e deschis. = shorter, very common in everyday speech

Both are correct.

Because ghișeu is a neuter noun in Romanian.

Romanian neuter nouns behave:

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

Since ghișeul is singular, the adjective uses the masculine singular form:

• deschis = masculine singular
• deschisă = feminine singular
• deschise = feminine/neuter plural

So:

• Ghișeul este deschis. = singular
• Ghișeele sunt deschise. = plural

It is originally the past participle of a deschide (to open), but in sentences like this it functions as an adjective meaning open.

So for a learner, the most useful thing is to understand that here deschis means the state of being open:

• Ușa este deschisă. = The door is open.
• Ghișeul este deschis. = The counter is open.

This is very similar to English, where open can describe a state.

Normally, no. In standard Romanian, you generally keep the verb to be in this kind of sentence.

So:

• Ghișeul este deschis. = correct
• Ghișeul deschis. = not a normal complete sentence in standard Romanian

Romanian is not like some languages where the present-tense to be can regularly disappear.

The plural is:

• ghișee = counters / service windows
• ghișeele = the counters / the service windows

So the full plural sentence is:

• Ghișeele sunt deschise. = The counters are open.

Notice the changes:

• ghișeul → ghișeele
• este → sunt
• deschis → deschise

Yes, Romanian has some flexibility, but Ghișeul este deschis is the most neutral and natural order.

You may also hear:

• Este deschis ghișeul? = Is the counter open?
• Deschis este ghișeul is possible only in marked or unusual contexts, but it is not the normal basic pattern.

For learners, the safest pattern is:

noun + form of a fi + adjective

It is neutral and perfectly normal. It can be used in everyday speech, announcements, signs, or customer-service contexts.

For example, on a sign you might also see shorter versions such as:

• Deschis
• Închis
• Ghișeul este deschis
• Ghișeul este închis

So it is neither especially formal nor especially casual.