Daftar itu belum lengkap.

to be

Breakdown of Daftar itu belum lengkap.

• itu: that
• belum: not yet
• daftar: the list

Questions & Answers about Daftar itu belum lengkap.

What does daftar mean here? Is it always “list”?

In this sentence, daftar is a noun meaning “list”.
However, daftar can also mean “to register / to sign up” when used as a verb (for example: Saya mau daftar kursus. – “I want to sign up for the course.”).
So the word is flexible; here the context clearly makes it a thing (a list), not an action.

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Why is there no word for “is” in Daftar itu belum lengkap?

Indonesian usually does not use a verb like “to be” (is/are/am) in simple present-tense sentences with adjectives or nouns.
So instead of saying “The list is not complete yet”, Indonesian just says:
Daftar itu (that list) + belum lengkap (not-yet complete).
The idea of “is” is understood from the structure; you don’t need to say it explicitly.

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What’s the difference between belum and tidak, and why use belum here?

• belum = “not yet”, and it often implies the situation may change in the future.
• tidak = “not” (simple negation, no “yet” idea).

Daftar itu belum lengkap = “That list is not complete yet,” suggesting it will or should be completed later.
If you said , it’s more like “That list is ” (and maybe won’t be).