La habitación está totalmente vacía.

Spanish uses two verbs for to be: ser and estar.

Here, está is used because the sentence describes the room’s current state or condition: it is empty.

• La habitación está vacía = the room is empty
• Estar is commonly used with conditions, states, and results

If you used es vacía, it would sound unnatural here, because emptiness is being treated as a state, not an essential characteristic.

La means the, so la habitación means the room.

In Spanish, articles are used very often, sometimes more often than in English. If you are talking about a specific room, la habitación is the normal form.

You might omit the article in some special contexts, such as:

• labels
• headlines
• very abbreviated notes

But in a normal sentence, La habitación está totalmente vacía is the natural choice.

Because habitación is a feminine singular noun, the adjective must agree with it.

• la habitación → feminine singular
• vacía → feminine singular form of vacío

Compare:

• El cuarto está vacío = The room is empty
• La habitación está vacía = The room is empty

This is called adjective agreement.

In Spanish, every noun has grammatical gender, usually masculine or feminine. Habitación is feminine, which is why it takes:

• la
• feminine adjectives like vacía

A useful clue is that many nouns ending in -ción are feminine:

• la habitación
• la canción
• la situación

So if you see -ción, feminine is often a good guess.

Totalmente means totally or completely.

So:

• La habitación está vacía = The room is empty
• La habitación está totalmente vacía = The room is completely empty

It is not necessary for the sentence to be grammatical. It just adds emphasis.

Totalmente is an adverb, and here it modifies the adjective vacía.

In Spanish, adverbs like totalmente, muy, bastante, and completamente usually go before the adjective they modify:

• muy grande
• bastante interesante
• totalmente vacía

So totalmente vacía works like completely empty in English.

Both can mean room, but they are not always identical in use.

• habitación often means room, especially a bedroom or a room in a house or hotel
• cuarto can also mean room, and is very common in many contexts

In Spain, habitación is very natural here. Depending on context, cuarto could also work:

• El cuarto está totalmente vacío

But la habitación is a very standard and clear choice.

The accent marks show which syllable is stressed, and sometimes they also help distinguish word forms.

• habitación → stress on the final -ción
• está → stress on the second syllable
• vacía → stress on cí

In vacía, the accent also helps show that í-a is pronounced in separate syllables:

• va-CÍ-a

Without the accent, the pronunciation pattern would be different.

A rough pronunciation guide is:

la a-bi-ta-THYON es-TA to-tal-MEN-te ba-THEE-a

More carefully:

• h in habitación is silent
• ción in Spain sounds roughly like thyon
• c before i in vacía is pronounced like th in much of Spain
• v and b are pronounced very similarly in Spanish

If you use a Latin American pronunciation, vacía would sound with an s sound instead of th, which is also perfectly valid Spanish, just not the typical Spain pronunciation.

Yes, La habitación está muy vacía is grammatical, but it does not mean exactly the same thing.

• muy vacía = very empty
• totalmente vacía = completely empty

Totalmente vacía sounds stronger and suggests there is nothing in the room at all.

Yes, but the original order is the most neutral and natural.

Standard order:

• La habitación está totalmente vacía.

You might sometimes hear or read variations for emphasis, such as:

• Está totalmente vacía la habitación.

But that sounds more marked or stylistic. For everyday use, stick with:

• La habitación está totalmente vacía.

Yes, and that is one reason estar is used.

The sentence naturally suggests the room is empty right now or in the situation being described. For example:

• after someone moved out
• before furniture arrives
• after everything was removed

So the sentence fits a temporary or observed condition very well.

No. Vacío / vacía is used for many things that are empty.

Examples:

• El vaso está vacío = The glass is empty
• La caja está vacía = The box is empty
• El estadio está vacío = The stadium is empty

It changes form to match the noun:

• vacío for masculine singular
• vacía for feminine singular
• vacíos for masculine plural
• vacías for feminine plural