Dzianina jest miękka.

Because dzianina is a feminine singular noun, and in Polish adjectives must agree with the noun in gender, number, and usually case.

The adjective miękki means soft, but its form changes:

• miękki — masculine
• miękka — feminine
• miękkie — neuter

Since dzianina is feminine, you say:

• Dzianina jest miękka. — The knit fabric is soft.

A very common clue in Polish is the ending -a. Many singular nouns ending in -a are feminine.

So:

• dzianina — feminine

That is why the adjective also takes a feminine form: miękka.

This pattern is very common:

• książka jest ciekawa — the book is interesting
• kawa jest gorąca — the coffee is hot
• dzianina jest miękka — the knit fabric is soft

Jest means is. It is the 3rd person singular form of the verb być (to be).

So the sentence is built like this:

• dzianina — the knit fabric / knitted material
• jest — is
• miękka — soft

Literally: Knit fabric is soft.

Usually, in normal standard Polish, no — you should keep it:

• Dzianina jest miękka.

In the present tense, Polish often omits to be in some special styles, headlines, notes, or very colloquial speech, but for a learner the safe and correct full sentence is:

• Dzianina jest miękka.

So if you want to say The knit fabric is soft, use jest.

Because Polish does not have articles like a and the.

So dzianina can mean:

• knit fabric
• the knit fabric
• sometimes just fabric, depending on context

Polish relies on context instead of articles. English needs a/the, but Polish usually does not.

It is in the nominative case.

Why? Because dzianina is the subject of the sentence — it is the thing being described.

The basic pattern is:

• [subject in nominative] + jest + [adjective]

So here:

• Dzianina — nominative singular
• jest miękka — is soft

Yes, but that is not exactly the same structure.

• Dzianina jest miękka. = The knit fabric is soft.
  This is a full sentence.

• Miękka dzianina = soft knit fabric
  This is just a noun phrase, not a complete sentence by itself.

So:

• If you are describing the fabric in a full statement, use Dzianina jest miękka.
• If you are just naming or labeling it, use Miękka dzianina.

Yes, Polish word order is more flexible than English, but not every version sounds equally neutral.

The most neutral order here is:

• Dzianina jest miękka.

You could also hear:

• Miękka jest dzianina.
• Jest miękka dzianina.

But these usually sound more marked, literary, contrastive, or context-dependent.

For learners, the best default is:

• Dzianina jest miękka.

A rough English-friendly guide would be:

• dzianina ≈ jya-NEE-na
• jest ≈ yest
• miękka ≈ MYENK-ka

A few useful pronunciation notes:

• dzi sounds a bit like a soft j sound
• j in Polish sounds like English y
• ę is a nasal vowel; before k it is often pronounced something like en/em + k in practice
• kk is pronounced as a strong k sound

A more natural approximate whole-sentence pronunciation is:

• jya-NEE-na yest MYENK-ka

Dzianina usually refers to knitted fabric, jersey fabric, or knit material rather than just any fabric.

So it is more specific than a general word like materiał (material/fabric) or tkanina (woven fabric / fabric).

That means Dzianina jest miękka suggests something like:

• The knit fabric is soft.
• This knitted material is soft.

You add nie before jest:

• Dzianina nie jest miękka. — The knit fabric is not soft.

This is the normal way to negate to be in Polish:

• jest — is
• nie jest — is not

In spoken Polish, you can often make it a question just by using intonation:

• Dzianina jest miękka? — Is the knit fabric soft?

You can also add czy at the beginning for a clear yes/no question:

• Czy dzianina jest miękka? — Is the knit fabric soft?

For learners, czy + sentence is a very useful pattern.

The adjective miękki changes depending on the noun:

• miękki — masculine singular
• miękka — feminine singular
• miękkie — neuter singular
• miękcy / miękkie — plural, depending on the type of noun and usage

Some simple examples:

• Materiał jest miękki. — The material is soft.
• Dzianina jest miękka. — The knit fabric is soft.
• Krzesło jest miękkie. — The chair/seat is soft.

So when learning adjectives in Polish, it is best to learn that they change form to match the noun.