Το χτεσινό ξενύχτι με κούρασε πολύ.

Literally, it means the last night’s staying up late or yesterday’s loss of sleep.

• το = the
• χτεσινό = yesterday’s / last night’s
• ξενύχτι = staying up all night, a sleepless night, or late-night wakefulness

So the whole noun phrase refers to the fact that the speaker stayed up late or didn’t sleep properly the previous night.

Because ξενύχτι is a neuter singular noun, so the article and adjective also have to be neuter singular.

Agreement in Greek is very important:

• το = neuter singular the
• χτεσινό = neuter singular form of the adjective
• ξενύχτι = neuter singular noun

So all three match in gender, number, and case.

Ξενύχτι is a noun meaning staying up late, staying up all night, or a night without enough sleep.

It comes from the idea of being awake through the night. Depending on context, it can suggest:

• staying out late for fun
• working late
• not sleeping all night
• a rough late night in general

In this sentence, it is the thing that caused the tiredness.

Με means me, and here it is the direct object of the verb κούρασε.

So:

• με κούρασε = tired me / made me tired

Greek often uses weak object pronouns like this before the verb:

• με = me
• σε = you
• τον / τη(ν) / το = him / her / it

So the structure is basically:

• Το χτεσινό ξενύχτι = subject
• με = object, me
• κούρασε = tired / made tired
• πολύ = a lot / very much

Because Greek often expresses this idea with a verb meaning to tire or to make tired.

So Το χτεσινό ξενύχτι με κούρασε πολύ is structurally:

• Last night’s staying up late tired me a lot

English often prefers:

• I got very tired from staying up late last night
• Last night’s lack of sleep exhausted me

Greek is using a more direct cause → effect structure.

Κούρασε is the aorist past of κουράζω.

Here it means something like:

• tired
• made tired
• wore out

The aorist is commonly used for a completed event in the past. In this sentence, the tiring is viewed as a finished result of the previous night.

Base verb:

• κουράζω = I tire / I make tired

Aorist:

• κούρασα = I tired
• κούρασε = he/she/it tired

Since the subject is το χτεσινό ξενύχτι (a neuter singular thing), Greek uses κούρασε = it tired.

Because the subject is singular:

• το χτεσινό ξενύχτι = the late night / last night’s staying up

That is one thing, grammatically singular, so the verb must also be singular:

• κούρασε = it tired

If the subject were plural, then you would use a plural verb form.

Here πολύ means a lot or very much.

So:

• με κούρασε πολύ = it tired me a lot

It is modifying the verb phrase, not a noun.

Compare:

• πολύ νερό = a lot of water
• κουράστηκα πολύ = I got very tired / I was tired a lot

In your sentence, it intensifies the effect of the verb.

Yes. Χτεσινό and χθεσινό are both seen, and they represent the same word.

• χτεσινός / χτεσινό is very common in everyday Modern Greek
• χθεσινός / χθεσινό is a more traditional spelling

Likewise:

• χτες and χθες both mean yesterday

In pronunciation, speakers usually say it with a simple ht/xt sound, so the spelling without θ often feels more natural in informal modern use.

A rough pronunciation guide is:

to hte-si-NO kse-NIH-hti me KOO-ra-se po-LEE

A few notes:

• χτ at the start of χτεσινό can be tricky; it sounds roughly like ht or kh+t
• ξ = ks
• χ in ξενύχτι is the Greek h/ch sound, not the English ch in chair
• the stress falls on:
  • χτεσινό
  • ξενύχτι
  • κούρασε
  • πολύ

This is a very natural Greek word order:

• subject: Το χτεσινό ξενύχτι
• object pronoun: με
• verb: κούρασε
• adverb: πολύ

Greek word order is more flexible than English, but this order sounds normal and neutral.

You could also hear variations like:

• Με κούρασε πολύ το χτεσινό ξενύχτι.
• Πολύ με κούρασε το χτεσινό ξενύχτι.

These can shift emphasis, but the original sentence is straightforward and standard.

Usually, in this sentence, το sounds natural and expected.

Το χτεσινό ξενύχτι refers to a specific event: the staying up late last night. Greek often uses the definite article in cases where English might or might not.

If you remove το, the phrase can sound less natural in this context or more like a headline or note than a full ordinary sentence.

So for everyday speech, Το χτεσινό ξενύχτι is the best choice.

Not with exactly the same meaning.

• Το χτεσινό ξενύχτι = last night’s staying up late
• Χτες = yesterday

If you say Χτες το ξενύχτι..., it sounds less natural because ξενύχτι is something associated with the night, and χτες as a separate adverb may not fit as neatly.

A more natural alternative would be:

• Το ξενύχτι χτες με κούρασε πολύ — possible, but less smooth
• Το χτεσινό ξενύχτι με κούρασε πολύ — best, most natural

So the adjective χτεσινό works especially well because it directly modifies ξενύχτι.

Yes, χτεσινό is an adjective.

Its dictionary form is usually given as:

• χτεσινός, χτεσινή, χτεσινό

These are the masculine, feminine, and neuter forms.

In your sentence, the noun ξενύχτι is neuter, so you use the neuter form:

• χτεσινό ξενύχτι

Examples:

• ο χτεσινός αγώνας = yesterday’s match
• η χτεσινή μέρα = yesterday’s day
• το χτεσινό ξενύχτι = last night’s staying up late

Yes. In English, we often need more words to make the meaning explicit, but Greek κούρασε naturally covers the idea tired someone / made someone tired.

So:

• με κούρασε = it tired me
• με κούρασε πολύ = it made me very tired

That is a normal and common way to express this in Greek.

A very common alternative would be:

• Κουράστηκα πολύ από το χτεσινό ξενύχτι.

This means:

• I got very tired from last night’s staying up late.

Compare the two patterns:

1. Το χτεσινό ξενύχτι με κούρασε πολύ.
   = Last night’s staying up late tired me a lot.

2. Κουράστηκα πολύ από το χτεσινό ξενύχτι.
   = I got very tired from last night’s staying up late.

Both are natural; the first focuses more on the cause, and the second more on the speaker’s experience.