Komoda je sada stabilna.

Je is the 3rd person singular form of the verb biti (to be), so here it means is.

So:

• Komoda = the dresser / chest of drawers
• je = is
• sada = now
• stabilna = stable

Together: Komoda je sada stabilna = The dresser is stable now.

Because it agrees with komoda, which is a feminine singular noun.

In Serbian, adjectives must agree with the noun in gender, number, and case.

Here are the basic singular forms of stable:

• stabilan = masculine
• stabilna = feminine
• stabilno = neuter

Since komoda is feminine, you use stabilna.

Serbian normally does not use articles like the or a/an.

So komoda can mean:

• a dresser
• the dresser

Which one is meant depends on context. In many learning translations, English uses the because it sounds more natural in that situation.

Yes. Sada is a standard and very common word for now.

You may also hear sad, especially in everyday speech. It usually means the same thing.

So both are common:

• Komoda je sada stabilna.
• Komoda je sad stabilna.

The version with sada can sound a little more neutral or slightly more formal.

Yes. Serbian word order is more flexible than English word order.

The neutral order here is:

• Komoda je sada stabilna.

But other orders are possible, depending on emphasis:

• Sada je komoda stabilna. = Now the dresser is stable.
• Komoda je stabilna sada. = puts more emphasis on now
• Stabilna je sada komoda. = possible, but less neutral and more stylistically marked

So the original sentence is the most natural basic version.

In standard Serbian, in a normal sentence like this, je should be present.

So:

• Komoda je sada stabilna. = correct

Without je:

• Komoda sada stabilna. = not standard as a normal full sentence

In some special styles, headlines, notes, or very informal speech, parts of to be can sometimes be dropped, but learners should keep je here.

Usually in a sentence like this, yes, it most naturally means physically stable: the dresser does not wobble or tip easily.

But stabilan / stabilna / stabilno can also be used more generally, like English stable:

• stabilna situacija = a stable situation
• stabilna veza = a stable relationship
• stabilno stanje = a stable condition

In this sentence, because komoda is a piece of furniture, the physical meaning is the obvious one.

A simple pronunciation guide for an English speaker is:

• Komoda ≈ KO-mo-da
• je ≈ yeh
• sada ≈ SA-da
• stabilna ≈ sta-BEEL-na

A rough full pronunciation:

KO-mo-da yeh SA-da sta-BEEL-na

A few useful notes:

• j in Serbian is pronounced like English y
• a is usually like a in father
• Serbian pronunciation is generally quite phonetic: words are usually pronounced much like they are written

It is in the nominative singular.

That is because komoda is the subject of the sentence: the thing that is stable.

So:

• komoda = nominative singular
• stabilna also appears in a form that matches it

This is a basic subject + to be + adjective structure.

Yes, that is grammatical.

Both of these are possible:

• Komoda je sada stabilna.
• Komoda je stabilna sada.

The first one is usually the more neutral way to say it. The second can sound like you are emphasizing the time element a bit more, as in it is stable now.

Only the adjective would change to match the noun.

Examples:

• Sto je sada stabilan. = The table is stable now.
  (sto is masculine, so stabilan)

• Ogledalo je sada stabilno. = The mirror is stable now.
  (ogledalo is neuter, so stabilno)

This is a very important pattern in Serbian: adjectives must match the noun.