Grammar Rule in 30 Seconds
Adapt your Indonesian register by choosing between formal 'Anda' or informal 'kamu' based on the social hierarchy and intimacy of your audience.
- Use 'Anda' for professional or unknown settings: 'Apakah Anda sudah makan?'
- Use 'kamu' or 'lo' for friends and peers: 'Kamu udah makan belum?'
- Adjust verb prefixes (me-/ber-) to drop them in casual speech: 'Saya membeli' vs 'Aku beli'.
Meanings
The strategic selection of vocabulary, pronouns, and grammatical structures to align with the social distance and power dynamic between speakers.
Formal/Professional
Used in business, government, or with strangers.
“Apakah Anda memerlukan bantuan?”
“Saya akan menghadiri rapat tersebut.”
Colloquial/Casual
Used with friends, family, and peers.
“Lo mau ke mana?”
“Gue nggak tahu nih.”
Intimate
Used between romantic partners or very close friends.
“Sayang, kamu mau makan apa?”
“Aku kangen kamu.”
Register Comparison Table
| Category | Formal | Informal | Slang |
|---|---|---|---|
| I | Saya | Aku | Gue |
| You | Anda | Kamu | Lo |
| No | Tidak | Enggak | Nggak |
| Yes | Ya | Ya | Iya |
| Eat | Makan | Makan | Makan |
| Buy | Membeli | Membeli | Beli |
Common Prefix Reductions
| Formal Prefix | Casual Form |
|---|---|
| Membeli | Beli |
| Mencari | Cari |
| Berjalan | Jalan |
| Berbicara | Ngomong |
Reference Table
| Form | Structure | Example |
|---|---|---|
| Formal | Pronoun + Verb + Object | Saya membeli buku. |
| Informal | Pronoun + Verb + Object | Aku beli buku. |
| Question | Apakah + Pronoun + Verb | Apakah Anda mengerti? |
| Casual Q | Pronoun + Verb + -kah/Intonation | Kamu ngerti? |
| Negative | Tidak + Verb | Saya tidak tahu. |
| Casual Neg | Nggak + Verb | Gue nggak tahu. |
| Request | Mohon + Verb | Mohon duduk. |
| Casual Req | Tolong + Verb | Tolong duduk. |
Espectro de formalidad
Saya sedang makan. (Daily life)
Aku sedang makan. (Daily life)
Aku lagi makan. (Daily life)
Gue lagi makan. (Daily life)
The Register Spectrum
Formal
- Saya I
- Anda You
Casual
- Aku I
- Kamu You
Slang
- Gue I
- Lo You
Examples by Level
Apa kabar Anda?
How are you? (formal)
Kamu mau makan?
Do you want to eat? (informal)
Saya tidak tahu.
I don't know. (formal)
Aku mau pergi.
I want to go. (informal)
Apakah Anda sudah makan?
Have you eaten? (formal)
Lo udah makan belom?
Have you eaten yet? (slang)
Saya ingin membeli ini.
I want to buy this.
Aku mau beli ini.
I want to buy this.
Pak Budi, apakah Bapak ada waktu?
Mr. Budi, do you have time?
Gue nggak bisa datang.
I can't come.
Mohon maaf atas keterlambatan saya.
Sorry for my delay.
Sori ya, gue telat.
Sorry, I'm late.
Anda sekalian diharapkan hadir tepat waktu.
You all are expected to arrive on time.
Kalian mau pada ke mana nih?
Where are you all going?
Saya rasa keputusan ini kurang tepat.
I think this decision is not quite right.
Gue rasa ini nggak bener deh.
I think this isn't right.
Kiranya Bapak berkenan meninjau dokumen ini.
I hope you are willing to review this document.
Gue sih santai aja, terserah lo.
I'm chill, it's up to you.
Apakah Anda keberatan jika saya bertanya?
Do you mind if I ask?
Boleh nanya nggak?
Can I ask?
Dengan segala hormat, saya tidak dapat menyetujui usulan tersebut.
With all due respect, I cannot agree to that proposal.
Ya elah, gitu aja dibawa serius.
Come on, don't take it so seriously.
Mohon perkenan Bapak untuk memberikan arahan.
I request your guidance, sir.
Gue sih ogah kalau disuruh gitu.
I'm not doing that if I'm asked.
Easily Confused
Learners use 'Anda' for everyone.
Learners don't know which 'I' to use.
Learners use 'nggak' in formal writing.
Errores comunes
Gue makan.
Saya makan.
Anda makan?
Kamu makan?
Saya nggak tahu.
Saya tidak tahu.
Kamu membeli.
Kamu beli.
Apakah kamu makan?
Kamu makan?
Gue ingin membeli.
Gue mau beli.
Anda mau ke mana?
Bapak mau ke mana?
Saya mau nongkrong.
Saya ingin pergi.
Lo sudah makan?
Lo udah makan?
Bapak makan?
Bapak sudah makan?
Saya rasa lo benar.
Saya rasa Anda benar.
Gue mohon maaf.
Saya mohon maaf.
Anda sekalian pada datang.
Anda sekalian diharapkan hadir.
Bapak mau apa?
Bapak memerlukan sesuatu?
Sentence Patterns
Saya ___ (formal verb) ___ (object).
Gue ___ (slang verb) ___ (object).
Apakah ___ (formal pronoun) ___ (verb)?
Lo ___ (slang verb) ___ (object) nggak?
Real World Usage
Saya sangat tertarik dengan posisi ini.
Gue otw ya!
Saya mau pesan nasi goreng.
Kalian pada ke mana?
Yth. Bapak Dosen,
Berapa harga tiket ini?
Start Formal
Don't Mix
Listen First
Use Titles
Smart Tips
Use 'Saya' and 'Anda' until they switch to 'Aku/Kamu'.
Use 'Gue/Lo' to sound natural.
Use titles like 'Pak' or 'Bu'.
Use 'Saya' for politeness.
Pronunciación
Formal Intonation
Flat, steady, professional.
Casual Intonation
Rising and falling, expressive.
Formal
↗↘
Professional inquiry.
Casual
↗↗
Friendly excitement.
Memorize It
Mnemonic
S-A-G: Saya (Formal), Aku (Casual), Gue (Slang).
Visual Association
Imagine a ladder. At the top (formal) you wear a suit. In the middle (casual) you wear a t-shirt. At the bottom (slang) you are in pajamas.
Rhyme
Formal is Saya, casual is Aku, slang is Gue, pick the right one for you!
Story
Budi walks into a bank. He says 'Saya'. Then he meets his friend. He says 'Aku'. Then he texts his bestie. He says 'Gue'.
Word Web
Desafío
Write three sentences about your day: one for your boss, one for your friend, and one for your diary.
Notas culturales
Gue/Lo is the standard for youth culture in Jakarta.
Javanese speakers often bring their own politeness levels into Indonesian.
Using titles like 'Pak' or 'Bu' is mandatory in business.
Indonesian register evolved from the need to bridge diverse regional languages with a standard national language.
Conversation Starters
Apa kabar?
Lo lagi ngapain?
Apakah Bapak setuju?
Gue mau cabut nih, lo mau ikut?
Journal Prompts
Test Yourself
Which is formal?
___ (I) mau makan.
Find and fix the mistake:
Gue akan menghadiri rapat.
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
I don't know.
Answer starts with: Say...
Match each item on the left with its pair on the right:
Which is slang?
Find and fix the mistake:
Lo mau pergi ke mana, Bapak?
Score: /8
Ejercicios de practica
8 exercisesWhich is formal?
___ (I) mau makan.
Find and fix the mistake:
Gue akan menghadiri rapat.
makan / sudah / Anda / Apakah
I don't know.
Match formal to informal.
Which is slang?
Find and fix the mistake:
Lo mau pergi ke mana, Bapak?
Score: /8
Preguntas frecuentes (8)
No, only with close friends in informal settings.
It's formal, but can sound cold if used too much.
It's a feature of casual, spoken Indonesian.
People will understand, but you might sound awkward.
Listen to the other person's choice of words.
No, it's neutral/informal.
Yes, Javanese or Sundanese influence is common.
Only if it's a formal business text.
In Other Languages
Usted/Tú
Indonesian also changes verb prefixes.
Vous/Tu
Indonesian register is more tied to social hierarchy.
Sie/Du
Indonesian is more flexible with slang.
Keigo
Indonesian is less rigid than Japanese.
Antum/Anta
Indonesian doesn't have gendered pronouns.
Nin/Ni
Indonesian has more pronoun variety.