Saya mengupas pir itu pelan-pelan karena kening saya masih terasa hangat sejak tadi pagi.

Mengupas is the active verb form of kupas, which means to peel.

• kupas = the root word
• mengupas = to peel / peeling in an active sentence

In Indonesian, the meN- prefix often marks an active verb used when the subject is doing the action.

So:

• Saya mengupas pir itu = I am peeling that pear

If you just say kupas, it usually sounds more like:

• a dictionary form
• a command, depending on context
• or an incomplete clause

So in a normal statement, mengupas is the natural choice.

In Indonesian, itu often comes after the noun when it means that/the.

So:

• pir itu = that pear / the pear
• buku itu = that book
• rumah itu = that house

This is different from English, where that comes before the noun.

So the pattern is:

• noun + itu

In many contexts, itu can also make the noun feel more specific, so pir itu can mean either that pear or the pear, depending on context.

Pelan-pelan means slowly or carefully, little by little.

The base word is pelan = slow.
When Indonesian repeats it, the meaning often becomes more adverbial or gives a softer, more natural feel.

So:

• pelan = slow
• pelan-pelan = slowly / gently / carefully

In this sentence, mengupas pir itu pelan-pelan means the speaker is peeling the pear in a slow, careful way.

This kind of repetition is very common in Indonesian:

• baik-baik = carefully / properly
• pelan-pelan = slowly
• cepat-cepat = quickly / in a hurry

Here it comes after the object:

• Saya mengupas pir itu pelan-pelan

That is a normal Indonesian word order. The rough structure is:

• Saya = subject
• mengupas = verb
• pir itu = object
• pelan-pelan = adverb
• karena ... = reason clause

Indonesian adverbs are often flexible, but this position sounds natural.

You may also hear other patterns in different contexts, but verb + object + adverb is very common.

Kening means forehead.

So:

• kening saya = my forehead

This is more specific than:

• kepala = head
• wajah/muka = face

In this sentence, the speaker says their forehead still feels warm, which suggests they may be feeling a bit feverish or unwell.

This is an important difference.

• Saya merasa hangat = I feel warm
• Kening saya terasa hangat = My forehead feels warm

With terasa, the focus is on how something feels/seems when experienced physically.

So:

• terasa hangat = feels warm
• terasa dingin = feels cold
• terasa sakit = feels painful / hurts

Using kening saya terasa hangat sounds more specific and physical. It is talking about the forehead as the body part that feels warm.

Terasa means something like feels, is محسوس as, or can be felt as.

It often describes a sensation or impression.

Examples:

• Airnya terasa dingin. = The water feels cold.
• Ruangan ini terasa sempit. = This room feels cramped.
• Kening saya terasa hangat. = My forehead feels warm.

So terasa hangat does not simply describe temperature in a factual way like a thermometer reading. It describes the speaker’s perceived sensation.

Masih means still.

So:

• kening saya terasa hangat = my forehead feels warm
• kening saya masih terasa hangat = my forehead still feels warm

It shows that this condition started earlier and has continued up to now.

That fits well with the next part:

• sejak tadi pagi = since this morning / since earlier this morning

Together, they give the sense that the warmth has not gone away.

Sejak means since.

Tadi pagi means earlier this morning or this morning (earlier today).

So:

• sejak tadi pagi = since earlier this morning

This tells you the starting point of the condition.

A useful comparison:

• sejak tadi pagi = since earlier this morning
• dari tadi pagi = from earlier this morning / all the way since this morning

In many everyday situations, both can be similar, but sejak clearly emphasizes since a starting point.

Because the sentence has two different noun phrases that need to be clear:

• Saya = the subject of mengupas
• kening saya = my forehead

In English, we also repeat possession:

• I peel the pear slowly because my forehead still feels warm...

Indonesian does not usually replace my with something implied here. Saying kening terasa hangat without saya could sound more general or incomplete unless the context is already very clear.

So repeating saya is natural and normal.

Karena means because.

It connects the main action to the reason:

• Saya mengupas pir itu pelan-pelan = I peel the pear slowly
• karena kening saya masih terasa hangat sejak tadi pagi = because my forehead still feels warm since this morning

So karena introduces the explanation for why the speaker is doing the action slowly.

Other common connectors include:

• karena = because
• sebab = because / due to
• jadi = so / therefore

In this sentence, karena is the most direct and natural choice.

Not exactly.

• hangat = warm
• panas = hot

Hangat is milder than panas.

So:

• kening saya terasa hangat = my forehead feels warm
• kening saya terasa panas = my forehead feels hot

Using hangat suggests a lighter or less intense sensation. It can still imply that the speaker might not be feeling well, but it sounds softer than panas.

Yes, it is natural and understandable.

It has a very normal structure:

• Saya mengupas pir itu pelan-pelan
• karena kening saya masih terasa hangat sejak tadi pagi.

The meaning is a little specific or personal, but grammatically it is fine. It sounds like someone is saying they are peeling the pear slowly because they still feel slightly unwell or feverish.

A native speaker might also say similar variations, such as:

• Saya mengupas pir itu pelan-pelan karena kening saya masih hangat sejak tadi pagi.
• Saya mengupas pir itu pelan-pelan karena dari tadi pagi kening saya masih terasa hangat.

But your original sentence is perfectly acceptable.