Gusi saya sakit, jadi saya mengunyah makanan pelan-pelan.

Gusi means gum as in the gums in your mouth. In Indonesian, many body-part nouns do not have to be marked explicitly as singular or plural. So gusi saya sakit can naturally mean my gum hurts or my gums hurt, depending on context.

If you really wanted to make it clearly plural, you could say gusi-gusi saya, but that is usually unnecessary.

In Indonesian, it is very normal to say noun + adjective/state.

So:

• gusi saya sakit = my gums are sore / my gums hurt

There is no word equivalent to are in this sentence. Indonesian often leaves out the verb to be in this kind of structure.

Compare:

• Saya lapar = I am hungry
• Dia sakit = He/She is sick
• Gusi saya sakit = My gums hurt

It can relate to both ideas, depending on context. Sakit is a broad word covering pain, soreness, or illness.

In this sentence, gusi saya sakit means something like:

• my gums hurt
• my gums are sore
• my gums are painful

So here it is about pain, not general illness.

The sentence says:

• Gusi saya sakit, jadi saya mengunyah makanan pelan-pelan.

The first saya shows possession:

• gusi saya = my gums

The second saya is the subject of the next clause:

• saya mengunyah = I chew / I am chewing

Indonesian often repeats pronouns where English might rely more on context. You could sometimes omit the second saya in casual speech if the meaning is obvious, but repeating it is clear and natural.

Here jadi means so, therefore, or as a result.

It connects the two ideas:

• Gusi saya sakit = my gums hurt
• jadi = so / therefore
• saya mengunyah makanan pelan-pelan = I chew food slowly

So it shows cause and result.

Be aware that jadi can also mean become in other contexts:

• Dia jadi guru = He/She became a teacher

But in your sentence, it works as a connector meaning so.

The base/root is kunyah = to chew.
The form mengunyah is the active verb form, made with the prefix meN-.

So:

• kunyah = chew
• mengunyah = to chew / chewing

This is a very common pattern in Indonesian. The prefix helps mark the verb as an active action done by the subject.

Because the root begins with k, that k disappears after the meN- prefix:

• kunyah → mengunyah

This kind of sound change is normal in Indonesian verb formation.

In very casual speech, Indonesians sometimes use the root alone, so saya kunyah makanan may be heard and understood. However, saya mengunyah makanan is more standard and grammatically complete.

So for learners, it is safest to use:

• saya mengunyah makanan

rather than the bare root:

• saya kunyah makanan

Makanan means food. It comes from the root makan = eat, with the suffix -an, which often forms nouns.

So:

• makan = to eat
• makanan = food

In the sentence:

• saya mengunyah makanan = I chew food

It is the object of the verb mengunyah.

Both pelan and pelan-pelan can mean slowly, but pelan-pelan is very common and often sounds more natural for an adverb meaning slowly / gently / little by little.

Reduplication often adds a sense of manner, continuity, or softness.

So:

• pelan = slow, soft, gentle
• pelan-pelan = slowly, gently

In this sentence, mengunyah makanan pelan-pelan means to chew food slowly.

Yes, standard Indonesian spelling writes reduplicated words with a hyphen:

• pelan-pelan
• hati-hati
• baik-baik

So pelan pelan without the hyphen is very common in informal texting, but the standard written form is pelan-pelan.

It comes after the object here:

• saya mengunyah makanan pelan-pelan

This is a normal Indonesian word order:

• subject + verb + object + adverb

So:

• saya = subject
• mengunyah = verb
• makanan = object
• pelan-pelan = adverb

You may also sometimes hear adverbs in slightly different positions, but this placement is natural and clear.

Usually, no. Dengan pelan-pelan sounds unnatural here.

Indonesian commonly uses pelan-pelan directly as an adverb without dengan:

• Saya berjalan pelan-pelan = I walk slowly
• Saya mengunyah makanan pelan-pelan = I chew food slowly

In some cases, dengan can be used before certain nouns or adjective-based expressions, but with pelan-pelan, the simple form is preferred.

Indonesian verbs do not change form for tense the way English verbs do. Mengunyah itself does not specifically mean chew, am chewing, or will chew. The time is usually understood from context or from time words.

So this sentence could be understood as present in context:

• My gums hurt, so I chew food slowly
• My gums hurt, so I’m chewing food slowly

If you wanted to make time clearer, you could add words like:

• sekarang = now
• kemarin = yesterday
• besok = tomorrow

Yes. Depending on tone and style, you could also use:

• maka = therefore, thus
• karena itu = because of that, therefore
• makanya = that’s why

But jadi is very common, natural, and conversational.

Examples:

• Gusi saya sakit, jadi saya mengunyah makanan pelan-pelan.
• Gusi saya sakit, makanya saya mengunyah makanan pelan-pelan.

Both work, though makanya is a bit more conversational.

Yes, it is natural and easy to understand.

A native speaker might also say slightly different versions, such as:

• Gusi saya sakit, jadi saya makan pelan-pelan.
• Karena gusi saya sakit, saya mengunyah makanan pelan-pelan.

But your original sentence is perfectly fine and grammatical.