"Itu tidak benar!"

Translation: That is not true!

[Jasonsudana]

Comrade, "That is not right" should be accepted.

[smeagol_lied]

I feel this is a very forceful if not rude thing to say in Indonesia - comments from anyone who is a native speaker or lived there longer than I did?

[SilverR05]

I live with Indonesian parents and they say that when we do something improper like speak rudely, or if someone repeatedly gets something wrong. It can also be when someone hears a rumor about you and you're trying to defend yourself. There might be other situations but this is what i can remember

[valpaillaiso]

What is the difference between "betul" and "benar"?

[AidanStone1]

I think 'betul' is 'correct' and 'benar' means 'true'

[drnuramita]

They're synonymous. You can use them interchangeable.

[judy967009]

Can you say 'that is not right'.?

[Wira_basa]

Yes, you can.

[caesar_solid]

"that is incorrect" is not acceptable?

[Tirpude]

Because 'tidak benar' will translate to 'not correct'. This is a negative sentence. Although the sentences will mean the same, the translation of 'tidak benar' is 'not correct' instead of 'incorrect'.