Jastuk je mekan, pa bolje spavam.

Je is the 3rd person singular form of biti (to be), so jastuk je mekan literally means the pillow is soft.

In Croatian, you normally include the verb to be in present-tense statements like this. Unlike in some languages where it can be omitted, Croatian usually needs it:

• Jastuk je mekan. = The pillow is soft.

You might occasionally see omission in very informal styles, headlines, or poetry, but for standard everyday Croatian, je should be there.

Yes. Mekan is an adjective, and it agrees with jastuk in gender, number, and case.

• jastuk = masculine singular
• so the adjective also appears in masculine singular nominative: mekan

Some matching forms are:

• mekan jastuk = soft pillow
• mekana deka = soft blanket
• mekano sjedalo = soft seat

So mekan is used here because it matches the noun jastuk.

Here pa means something like so, and so, or therefore.

In this sentence, it connects two ideas:

• Jastuk je mekan = the pillow is soft
• pa bolje spavam = so I sleep better

It is a very common Croatian connector and can sound a bit more natural and conversational than always using a heavier word like zato or stoga.

Compare:

• Jastuk je mekan, pa bolje spavam. = The pillow is soft, so I sleep better.
• Jastuk je mekan, zato bolje spavam. = The pillow is soft, that’s why I sleep better.

Both work, but pa is very common in everyday speech.

Because bolje here is an adverb, not an adjective.

It modifies the verb spavam (I sleep), so it tells us how someone sleeps:

• spavam bolje = I sleep better

Compare:

• bolji = better (adjective, masculine singular), used with nouns
  • bolji jastuk = a better pillow
• bolje = better (adverb), used with verbs
  • bolje spavam = I sleep better

So in this sentence, bolje is correct because it describes the action of sleeping, not the pillow.

Croatian often leaves out subject pronouns when they are already clear from the verb ending.

• spavam already means I sleep
• so ja is not necessary

That is why:

• bolje spavam = I sleep better

You can add ja for emphasis or contrast:

• Ja bolje spavam. = I sleep better.
• On loše spava, a ja bolje spavam. = He sleeps badly, but I sleep better.

So the version without ja is the normal neutral one.

Spavam is present tense, first person singular, from the verb spavati (to sleep).

Its basic present forms are:

• ja spavam = I sleep
• ti spavaš = you sleep
• on/ona/ono spava = he/she/it sleeps
• mi spavamo = we sleep
• vi spavate = you (plural/formal) sleep
• oni/one/ona spavaju = they sleep

In this sentence, the present tense can express a general current result:

• The pillow is soft, so I sleep better.

Yes, spavam bolje is also possible.

Croatian word order is more flexible than English, and the choice often depends on emphasis and rhythm.

• pa bolje spavam puts a little more focus on better
• pa spavam bolje sounds natural too, with a slightly more neutral flow

Both are grammatical. In short:

• bolje spavam = emphasis slightly on better
• spavam bolje = emphasis slightly more on the whole action

Croatian often uses word order to manage focus rather than strict grammar alone.

Jastuk is in the nominative singular because it is the subject of the sentence.

• Jastuk je mekan.
• The pillow is soft.

The subject in Croatian is normally in the nominative case. Since jastuk is the thing being described, nominative is the correct case here.

No. Mekan is a very common and natural word for soft, especially for physical softness.

For example:

• mekan jastuk = a soft pillow
• mekana tkanina = soft fabric

You may also encounter related forms or similar words, depending on context and region, but mekan is the basic everyday choice and is perfectly normal in this sentence.

Not usually. In Croatian, present tense often covers both a general present meaning and a current ongoing situation, depending on context.

Here, bolje spavam is most naturally understood as:

• I sleep better
• or I’m sleeping better

If the sentence is just presented by itself, English usually prefers I sleep better because it sounds like a general result of the pillow being soft. But in the right context, I’m sleeping better could also fit.

So the Croatian sentence itself is flexible, and the best English version depends on context.