Nie jestem już zmęczony.

In Polish, the subject pronoun is often omitted because the verb ending already shows who is doing the action.

• jestem = I am
• So Nie jestem już zmęczony already clearly means I am not ... anymore / already ...

You could say Ja nie jestem już zmęczony, but ja is usually added only for emphasis, contrast, or clarity.

Jestem is the 1st person singular form of the verb być (to be) in the present tense.

So:

• jestem = I am
• nie jestem = I am not

This is one of the most important Polish verbs to memorize because it is very common and irregular.

In Polish, nie is normally written as a separate word with verbs.

So:

• jestem = I am
• nie jestem = I am not

This is different from some other parts of Polish, because nie is often written together with adjectives or nouns, but with verbs it is usually separate.

In this sentence, już means something like already or anymore, depending on how English expresses the idea.

With a negative sentence like this, już often gives the sense of:

• no longer
• not anymore

So Nie jestem już zmęczony is naturally understood as I’m not tired anymore or I’m no longer tired.

Zmęczony is an adjective meaning tired. Here it is in the masculine singular form.

Polish adjectives change form to match the gender and number of the person or thing they describe.

So if a man says this, he says:

• Nie jestem już zmęczony.

A woman would say:

• Nie jestem już zmęczona.

The only change is the adjective:

• zmęczony = masculine
• zmęczona = feminine

This is very common in Polish: past-tense forms and many adjective-based expressions reflect the speaker’s gender.

Yes, Polish word order is more flexible than English word order.

The neutral, natural version is:

• Nie jestem już zmęczony.

But you may also hear variations such as:

• Już nie jestem zmęczony.

This often puts a little more focus on już / no longer. Both are understandable, but the original sentence is very natural and common.

The meaning is basically the same: I’m not tired anymore.

The difference is mostly emphasis and rhythm:

• Nie jestem już zmęczony = very natural, straightforward
• Już nie jestem zmęczony = often stresses the idea of no longer

In everyday speech, both can appear.

Yes. If you want to say very tired, you would add bardzo:

• Jestem bardzo zmęczony. = I am very tired.
• Nie jestem już bardzo zmęczony. = I’m not very tired anymore.

Without bardzo, zmęczony just means tired, not very tired.

A rough guide is:

• zmęczony ≈ zmenn-CHO-nih

A few helpful points:

• z before another consonant can sound voiced and blend smoothly
• ę is a nasal vowel, but before cz it is often pronounced more like en/em in real speech
• cz sounds like ch in chocolate
• stress in Polish usually falls on the second-to-last syllable, so here the stress is on czo:
  zmę-CZO-ny

Yes. It is in the present tense.

• jestem = I am

Polish uses the present tense here just like English does in I’m not tired anymore. The idea of a change from before comes from już, not from the tense itself.

It is possible, and people would understand it, but it sounds less natural in neutral everyday Polish than:

• Nie jestem już zmęczony
• Już nie jestem zmęczony

So for a learner, it is better to stick with one of those more standard versions.

The dictionary form is usually given as the masculine singular form:

• zmęczony = tired

But because it is an adjective, it has other forms too, for example:

• zmęczona = feminine singular
• zmęczeni / zmęczone = plural, depending on the group

So when you learn adjectives in Polish, remember that the form changes depending on who or what is being described.