How to Say Yes and No in Indonesian (and Sound Natural)

Ya and the two nos

Yes is simple, but no needs care:

• Ya (yah) means yes. Short and clear, like the English ya.
• Tidak (TEE-dah, the final k is barely voiced) means no or not, used with verbs and adjectives.
• Bukan (BOO-kahn) also means no or not, but it is used with nouns.

So Indonesian has one yes and two nos. The choice between tidak and bukan depends on what you are negating, which we explain next. Indonesian spelling is phonetic and there are no tones, which makes pronunciation friendly. Note the final k in tidak is a soft glottal stop, so it often sounds like tida with a little catch at the end.

The tidak versus bukan rule

This is the single most important thing to learn here, and it is very regular.

• Use tidak to negate verbs and adjectives. Saya tidak tahu (I do not know). Tidak besar (not big).
• Use bukan to negate nouns. Ini bukan buku saya (this is not my book). Bukan dia (not him or her).

An easy test: if the thing after your no is a naming word (a person, object, or category), use bukan. If it is an action or a description, use tidak. Getting this wrong is the classic beginner mistake, and native speakers will notice, though they will still understand you. Practice a few examples until the split feels automatic.

Casual and short forms

Everyday speech often shortens things, so here are the relaxed versions.

• Iya (EE-yah) is a slightly softer, friendlier yes than ya, very common in conversation.
• Ga or nggak (ngak) is casual slang for no, shortening tidak. Common among friends.
• Oke (oh-KAY) is the borrowed okay.
• Boleh (BOH-leh) means may or okay, used to agree to something.

These are for casual settings. Nggak is everywhere in informal Indonesian, but keep it out of formal writing or speech, where tidak is correct. Iya is a warm everyday yes you will hear constantly. Matching the formality of the setting is what makes you sound natural.

Belum, the not yet answer

Indonesian has a very common third answer that English lacks: not yet.

• Belum (be-LOOM) means not yet, and it is often the polite answer to questions about whether you have done something.

For example, if someone asks Sudah makan? (have you eaten?) and you have not, the natural answer is Belum (not yet), not tidak. Using belum implies you might still do it, which is gentler and often more accurate. The opposite is sudah (SOO-dah), meaning already or yes I have. Learning the sudah and belum pair is as useful as ya and tidak for daily conversation.

Saying no politely

A bare tidak is fine but can be softened, especially when declining hospitality.

• Tidak, terima kasih (TEE-dah, te-REE-mah KAH-see) means no, thank you.
• Maaf, tidak bisa (mah-AHF, TEE-dah BEE-sah) means sorry, I cannot.

The phrase terima kasih means thank you, and pairing it with tidak is the standard polite refusal. Indonesian culture values politeness and indirectness, so a soft refusal with thanks or a brief apology lands better than a blunt no. For accepting, you can say ya, boleh (yes, okay) or ya, terima kasih. A warm tone matters as much as the words.

Answering yes or no questions

Indonesian answers are direct once you pick the right no.

• Question: Kamu bisa bahasa Indonesia? (can you speak Indonesian?) Answer: Ya or Tidak.
• For a noun based statement, use bukan: Ini kucing? (is this a cat?) No: Bukan.
• For have you done it questions, remember sudah (already) and belum (not yet).

So your answer depends on the question type. Verbs and adjectives take tidak, nouns take bukan, and completion questions take sudah or belum. Once you internalize these three pairs, you can answer almost anything naturally.

Common mistakes to avoid

A few errors are near universal for English speakers.

• Using tidak to negate a noun. Use bukan for nouns.
• Answering a have you done it question with tidak instead of belum (not yet).
• Using slang nggak in formal settings, where tidak is correct.
• Over-pronouncing the final k in tidak. It is a soft glottal catch.

The tidak versus bukan split and the sudah versus belum pair are the two things worth real practice, and both stick faster when you use them out loud. A few short spoken exchanges with a patient speaker or an AI speaking partner will make choosing the right no automatic far quicker than reading rules.