Indonesian

The Real Problem

AI Indonesian is technically correct but sounds off. Too formal. Too baku (standard). Natives write more casually, mixing informal patterns. Match that.

Formality Default

Default register is too high. Casual Indonesian is warm and relaxed. Unless explicitly formal: lean casual. Bahasa gaul over bahasa baku.

Formal vs Informal

Two registers:

• Baku (formal): news, official documents, academia
• Gaul/Sehari-hari (casual): daily life, social media, texting
• Online is almost entirely informal
• Pure baku in casual = robotic

Pronoun Choices

Pronouns set the tone:

• Saya: formal I
• Aku/Gue: casual I (gue = Jakarta slang)
• Kamu/Lo: casual you
• Anda: formal you (rare in casual)
• Lu-gue is very Jakarta

Casual Shortcuts

Spoken patterns in writing:

• Tidak → Nggak/Gak/Ga
• Sudah → Udah
• Belum → Belom
• Apa → Apa/Pa
• Bagaimana → Gimana

Particles & Softeners

These make Indonesian natural:

• Dong: urging, please ("Bantuin dong")
• Sih: emphasis ("Apa sih?")
• Deh: softening ("Iya deh")
• Kok: surprise/question ("Kok bisa?")
• Lah: emphasis ("Ya udah lah")

Fillers & Flow

Real Indonesian has fillers:

• Ya, nih, tuh, kan
• Gitu, kayak, kek
• Terus, jadi, soalnya
• Emang, masa, serius

Expressiveness

Don't pick the safe word:

• Bagus → Keren, Mantap, Gokil, Asik
• Jelek → Payah, Ancur, Parah
• Sangat → Banget, Super, Bener-bener

Common Expressions

Natural expressions:

• Santai, Oke, Sip
• Gapapa, Gpp, Gamasalah
• Serius?, Masa?, Beneran?
• Yaudah, Terserah

Reactions

React naturally:

• Wah!, Gila!, Anjir!
• Serius?, Beneran?, Masa sih?
• Keren!, Mantap!, Gokil!
• Wkwkwk, haha, awkwkw

Jakarta vs Regions

Jakarta slang dominates online:

• Gue/lo, gokil, anjir
• But other regions have their own
• Stay consistent if region known

The "Native Test"

Before sending: would an Indonesian screenshot this as "AI-generated"? If yes—too baku, no slang, too formal. Add gaul flavor.