Ultimul autobuz pleacă la zece.

Romanian usually puts the definite article at the end of the noun phrase instead of using a separate word like English the.

In Ultimul autobuz, the idea of the last bus is built into ultimul.

So:

• ultim = last
• ultimul = the last

Because the adjective comes before the noun here, the definite marking appears on the adjective rather than as a separate word.

Ultimul means the last.

It comes from:

• ultim = last, final
• ultimul = the last

In this sentence, it agrees with autobuz, which is a masculine singular noun.

So:

• ultimul autobuz = the last bus

In normal Romanian, ultimul autobuz is the natural way to say the last bus.

When an adjective like ultim comes before the noun, Romanian often puts the definite article on the adjective:

• ultimul autobuz = the last bus

Autobuzul ultim would sound unnatural in ordinary speech.

A more common alternative with the noun first would be something like:

• autobuzul cel din urmă

But for everyday Romanian, ultimul autobuz is the standard expression.

Autobuz means bus.

It is a masculine noun in Romanian.

That matters because adjectives must agree with the noun, which is why you get:

• ultimul autobuz = the last bus

If the noun were feminine, the form of last would be different.

Pleacă means leaves or departs here.

It comes from the verb a pleca, which can mean:

• to leave
• to go away
• to depart

In the sentence Ultimul autobuz pleacă la zece, the most natural translation is:

• The last bus leaves at ten.

Pleacă is the 3rd person singular present tense form of a pleca.

That means it matches subjects like:

• el = he
• ea = she
• autobuzul / ultimul autobuz = the bus / the last bus

So:

• autobuzul pleacă = the bus leaves

Romanian often uses the present tense for scheduled future events, just like English:

• The bus leaves at ten
• Ultimul autobuz pleacă la zece

Because Romanian, like English, often uses the present tense for timetables, schedules, and fixed events.

So even if the departure is in the future, Romanian says:

• pleacă = leaves

This is exactly like English:

• The train leaves at 8.
• The last bus leaves at 10.

So the Romanian sentence is completely natural.

La zece means at ten.

Here:

• la = at
• zece = ten

In a time expression, la zece means at ten o’clock.

So:

• pleacă la zece = leaves at ten

No. La zece is perfectly normal and natural.

You can also say:

• la ora zece = at ten o’clock

That version is a little more explicit, but both are correct.

So these both work:

• Ultimul autobuz pleacă la zece.
• Ultimul autobuz pleacă la ora zece.

By itself, zece is just the number ten.

But in a sentence with la and a verb like pleacă, it is naturally understood as a time:

• la zece = at ten / at ten o’clock

Context tells you it is a time expression here.

Pleacă is pronounced approximately PLEA-kə.

A few useful notes:

• ea is pronounced together, something like e-a in one syllable group
• ă is the Romanian mid-central vowel, similar to the a in sofa for many English speakers

So the whole sentence is roughly:

• OOL-tee-mool ow-toh-BOOZ PLEA-kə la ZE-che

This is only an approximation, but it is good enough to get started.

A rough English-friendly pronunciation is:

OOL-tee-mool ow-toh-BOOZ PLEA-kə la ZE-che

More closely, syllable by syllable:

• Ul-ti-mul
• au-to-buz
• plea-că
• la
• ze-ce

Stress is roughly on:

• ultiMUL
• autoBUZ
• PLEAcă
• ZEce

Yes, Romanian word order is somewhat flexible, but Ultimul autobuz pleacă la zece is the most neutral and straightforward order.

You might also hear:

• La zece pleacă ultimul autobuz. = At ten, the last bus leaves.

This version puts more emphasis on the time.

But if you are learning the basic pattern, the original sentence is the best model:

• subject + verb + time

You add nu before the verb:

• Ultimul autobuz nu pleacă la zece.

That means:

• The last bus does not leave at ten.

So:

• pleacă = leaves
• nu pleacă = does not leave

A simple yes/no question can be formed just by intonation in speech:

• Ultimul autobuz pleacă la zece?

In writing, the word order can stay the same; the question mark shows it is a question.

This means:

• Does the last bus leave at ten?

Yes. Ultimul can mean last in the sense of final.

In this sentence, the last bus is the natural translation, but the idea is the same: it is the final bus of the evening, route, or schedule.

So ultimul often corresponds to:

• last
• final

depending on context.

The dictionary forms are:

• ultim = last
• autobuz = bus
• a pleca = to leave, to depart
• la = at, to
• zece = ten

The sentence uses inflected forms, especially:

• ultimul from ultim
• pleacă from a pleca

Yes. Romanian distinguishes between definite and indefinite forms.

• un ultim autobuz = a last bus
• ultimul autobuz = the last bus

But in real usage, the last bus is much more natural in this kind of sentence, because we usually mean a specific final bus in the schedule.

So the original sentence is the idiomatic one.