Kau sudah sarapan?

Have you had breakfast?

Breakdown of Kau sudah sarapan?

• sudah: already
• sarapan: to have breakfast
• kau: you

Questions & Answers about Kau sudah sarapan?

What does kau mean, and how natural is it?

Kau means singular "you." In Indonesia it sounds literary or blunt and is regionally common (e.g., some areas of Sumatra). Many speakers avoid it in everyday talk with strangers or elders.

What’s a safer or more neutral way to say this?

Use kamu for neutral (Kamu sudah sarapan?), Anda for polite/formal (Anda sudah sarapan?), or address with a title (Bapak/Bu sudah sarapan?). You can also just drop the pronoun: Sudah sarapan?

What does sudah do here? Is it "already" or "have"?

Sudah marks completed action, roughly "already" or English present perfect "have." So the sentence asks whether the breakfast action is already done.

How do I say "not yet" in response?

Use belum. For example: Belum or Belum, nanti. Use tidak for general negation, but with actions that might still happen, belum is the natural choice.

Is sarapan a noun or a verb?

Both. Sarapan can mean "breakfast" (noun) and "to have breakfast" (verb). In this sentence it’s verbal: "to have breakfast." A common synonym is makan pagi.