Ми чекаємо одинадцять хвилин.

• Ми = we. It is the subject, in the nominative plural.
• чекаємо = we wait / we are waiting. This is the 1st person plural present-tense form of чекати.
• одинадцять = eleven.
• хвилин = minutes, in the genitive plural form of хвилина.

So the structure is basically:

we + are waiting + eleven minutes

In natural English, this often corresponds to We have been waiting for eleven minutes.

Because Ukrainian often expresses duration without a preposition.

So:

• чекати одинадцять хвилин = to wait for eleven minutes
• працювати три години = to work for three hours
• жити тут два роки = to live here for two years

English usually needs for in this kind of sentence, but Ukrainian usually does not.

This is because of how Ukrainian nouns behave after numbers.

With 1, you use the singular:

• одна хвилина = one minute

With 2, 3, 4, you use the form:

• дві хвилини
• три хвилини
• чотири хвилини

With 5 and higher, including 11, you use the genitive plural:

• п’ять хвилин
• десять хвилин
• одинадцять хвилин

So хвилин is exactly the form you expect after одинадцять.

Because 11, 12, 13, and 14 are a special group in Ukrainian, just as they are in many Slavic languages.

So you get:

• одна хвилина = 1 minute
• двадцять одна хвилина = 21 minutes
• тридцять одна хвилина = 31 minutes

But:

• одинадцять хвилин = 11 minutes
• дванадцять хвилин = 12 minutes
• тринадцять хвилин = 13 minutes
• чотирнадцять хвилин = 14 minutes

So for 11–14, you do not follow the last digit. You treat them as a special set.

Yes. Very often, you can.

Because the verb чекаємо already tells you the subject is we, Ukrainian often drops the subject pronoun when it is clear from context.

So both are possible:

• Ми чекаємо одинадцять хвилин
• Чекаємо одинадцять хвилин

The version with Ми can sound a bit more explicit or emphatic, especially if you want to contrast we with someone else.

чекаємо is:

• present tense
• imperfective aspect

The verb is чекати, which is imperfective. That makes sense here because the action is ongoing: the waiting is in progress.

This is why чекаємо fits a meaning like:

• we are waiting
• we have been waiting

If you use the perfective partner почекати, the present-tense form actually has a future meaning:

• ми почекаємо = we will wait

So:

• ми чекаємо = we are waiting
• ми почекаємо = we will wait

In Ukrainian, the present tense can cover situations where English often prefers the present perfect continuous.

So Ми чекаємо одинадцять хвилин is very often best understood as:

• We have been waiting for eleven minutes

English usually prefers that form when the action started in the past and is still continuing now.

A very literal English rendering might look like We are waiting for eleven minutes, but that is usually less natural in standard English. Ukrainian has no special separate form here; the simple present form чекаємо does the job.

Yes. Ukrainian word order is flexible.

The neutral order here is:

• Ми чекаємо одинадцять хвилин

But you can move things around for emphasis:

• Одинадцять хвилин ми чекаємо
  This emphasizes the duration: Eleven minutes we’ve been waiting

• Чекаємо одинадцять хвилин
  This is natural if the subject is already understood

Word order changes usually affect focus and emphasis, not the core meaning.

Not in the same way as a thing or person you are waiting for.

In this sentence, одинадцять хвилин expresses duration: it tells you how long the waiting lasts.

Compare:

• Ми чекаємо автобус = We are waiting for the bus
  Here автобус is the thing being waited for.

• Ми чекаємо одинадцять хвилин = We have been waiting for eleven minutes
  Here одинадцять хвилин tells you the length of time.

So it is better to think of it as a time expression rather than a normal direct object.

The stress is:

• Ми чека́ємо одина́дцять хвили́н

A rough pronunciation guide for an English speaker is:

• my che-KA-ye-mo o-dy-NA-dtsyat khvy-LIN

A few helpful notes:

• ч sounds like ch in church
• є in чекаємо sounds like ye
• х is a throaty sound, like the ch in German Bach or Scottish loch
• и is not exactly English ee or ih; it is a central Ukrainian vowel, somewhere in between for many English learners

So чекаємо is pronounced something like che-KA-ye-mo, not as a single smooth English-style vowel sequence.