Ωχ, τελείωσε το χρονόμετρο!

Ωχ is an interjection, like oh no, oops, uh-oh, or oh! in English, depending on the situation.

In this sentence, it adds a sense of mild surprise, annoyance, or realization:

• Ωχ, τελείωσε το χρονόμετρο! = Oh no, the timer’s up!

It is very common in spoken Greek and is informal.

Τελείωσε is the aorist form of the verb τελειώνω / τελειώνω meaning to finish or to end.

Here it means that the action is now completed:

• the timer finished
• the timer ended
• more naturally in English: the timer’s up

Greek often uses the aorist in places where English might use:

• finished
• has finished
• or an idiomatic present like is up

So even though it looks like a past tense form, it can be the normal way to report that something has just ended.

Τελείωσε is third person singular.

That means it goes with a singular subject such as:

• το χρονόμετρο = the timer

So literally:

• τελείωσε το χρονόμετρο = the timer finished

It is the subject.

Even though English speakers may expect the subject to come first, Greek word order is more flexible. In this sentence:

• τελείωσε = finished
• το χρονόμετρο = the timer

So the meaning is:

• The timer finished / The timer ended

A useful thing to know is that το χρονόμετρο looks the same in the nominative and accusative because it is neuter singular. So form alone does not tell you everything here; you understand its role from the verb and the meaning.

Το is the definite article meaning the.

• το χρονόμετρο = the timer

Greek usually uses the definite article more regularly than English in many contexts. Here it is completely normal and expected.

Also, χρονόμετρο is a neuter noun, so it takes:

• το in the singular

Χρονόμετρο means timer or stopwatch, depending on context.

It comes from:

• χρόνος = time
• -μετρο = measuring device

In this sentence, the natural meaning is timer:

• the timer ran out
• the timer ended
• the timer’s up

If the context were sports or measuring elapsed time, it could also mean stopwatch.

Yes. Το χρονόμετρο τελείωσε is also correct.

Both are grammatical:

• Ωχ, τελείωσε το χρονόμετρο!
• Ωχ, το χρονόμετρο τελείωσε!

The difference is mainly one of focus or rhythm.

Starting with the verb, τελείωσε το χρονόμετρο, can sound a bit more immediate or dramatic in speech, especially after Ωχ.

Starting with the noun, το χρονόμετρο τελείωσε, is a little more neutral and straightforward.

Greek and English do not always package ideas in the same way.

English often says:

• The timer is up

Greek more naturally says:

• The timer finished
• The timer ended

So Greek uses a full verb such as τελείωσε, where English may prefer an adjective-like expression with is.

That is a very common difference between the two languages.

It is pronounced roughly te-LEE-o-se.

The stress falls on λεί:

• τε-ΛΕΙ-ω-σε

And χρονόμετρο is roughly:

• hro-NO-me-tro

with the stress on νό:

• χρο-ΝΟ-με-τρο

So the full sentence sounds roughly like:

• Ohkh, te-LEE-o-se to hro-NO-me-tro!

It is mostly neutral to informal.

• Ωχ is definitely informal and conversational.
• The rest of the sentence, τελείωσε το χρονόμετρο, is perfectly normal everyday Greek.

So the whole sentence sounds like something someone would naturally say in speech when reacting to a timer ending.

Yes. Depending on context, Greek speakers might also say things like:

• Τελείωσε ο χρόνος! = Time’s up!
• Έληξε ο χρόνος! = The time is over / Time is up!
• Χτύπησε το χρονόμετρο! = The timer went off! (if you mean the sound/alarm)

Your sentence specifically focuses on the idea that the timer has finished:

• Ωχ, τελείωσε το χρονόμετρο!

A different sentence may be more natural depending on whether you mean:

• the countdown ended,
• the available time ended,
• or the device made a sound.