Ugovor o najmu još vrijedi.

Both patterns can exist in Croatian, but ugovor o najmu is a very common and natural way to say contract about renting / lease agreement.

• ugovor = contract, agreement
• o = about, concerning
• najmu = najam in the case required after o

So ugovor o najmu literally means contract about lease/rental.

You may also see related expressions in Croatian legal or formal language, but ugovor o najmu is a standard, idiomatic phrase.

Because the preposition o requires the locative case.

• dictionary form: najam
• after o: o najmu

This is a normal case change in Croatian:

• govoriti o poslu = to talk about work
• čitati o gradu = to read about the city
• ugovor o najmu = lease contract

So najmu is not a different word; it is just the locative form of najam.

Here još means still.

So:

• još vrijedi = is still valid

Be careful: još can also mean more, another, or yet, depending on context. But in this sentence, still is the natural meaning.

Examples:

• Još čekam. = I’m still waiting.
• Želiš još kave? = Do you want more coffee?

Yes, in this sentence vrijedi means is valid, remains in force, or is still effective.

The verb vrijediti can have several meanings depending on context:

• to be worth
  
  • Ova knjiga vrijedi 20 eura. = This book is worth 20 euros.
• to be valid / apply / remain in force
  
  • Karta još vrijedi. = The ticket is still valid.
  • Ugovor još vrijedi. = The contract is still valid.

So here it is not about monetary value; it is about legal validity.

Vrijedi is:

• 3rd person singular
• present tense
• from the verb vrijediti

It agrees with ugovor, which is singular:

• ugovor ... vrijedi = the contract ... is valid

If the subject were plural, the verb would change:

• Ugovori još vrijede. = The contracts are still valid.

Croatian does not have articles like the or a/an.

So ugovor can mean:

• a contract
• the contract

The exact meaning depends on context. In your sentence, English will usually translate it as The lease agreement is still valid or The rental contract is still valid, because that sounds most natural.

No, Croatian word order is fairly flexible, although some orders sound more neutral than others.

The given sentence:

• Ugovor o najmu još vrijedi.

is a natural, neutral way to say it.

You could also hear:

• Ugovor o najmu vrijedi još.
• Još vrijedi ugovor o najmu.

But these may shift emphasis slightly. The original version is probably the safest and most standard for a learner.

Both relate to renting/leasing, but they are not always used in exactly the same way.

Very broadly:

• najam is commonly used for renting, especially homes, apartments, or general rental situations
• zakup can sound more formal or legal and may be used in some business or property contexts

In everyday learning, ugovor o najmu is the phrase you should know for lease/rental agreement, especially for housing.

A rough pronunciation guide for an English speaker is:

• Ugovor ≈ OO-go-vor
• o ≈ o
• najmu ≈ NY-myoo or NAI-moo
• još ≈ yosh
• vrijedi ≈ VRYE-di or vri-YE-di

A few helpful points:

• j is pronounced like English y
• š is pronounced like sh
• r is trilled or tapped
• ije/je in vrijedi may be tricky, but the main thing is not to pronounce j like English j

Yes. Depending on context, very natural English translations include:

• The lease agreement is still valid.
• The rental contract is still valid.
• The lease is still in force.
• The agreement still applies.

The Croatian sentence is slightly broader than one fixed English wording, so several translations are possible.

You negate vrijedi with ne:

• Ugovor o najmu ne vrijedi. = The lease agreement is not valid.
• Ugovor o najmu više ne vrijedi. = The lease agreement is no longer valid.

Notice that:

• još vrijedi = is still valid
• više ne vrijedi = is no longer valid

That contrast is very common in Croatian.

Yes, but the meaning changes.

Compare:

• Ugovor o najmu još vrijedi. = The lease agreement is still valid.
• Ugovor o najmu još ne vrijedi. = The lease agreement is not valid yet.

So:

• još
  • positive verb often means still
• još ne often means not yet

This is an important pattern in Croatian.