the correct spell is tak mungkin tak mungkin = tidak mungkin = impossible form: S + tak mungkin + V example: Kasus ini tak mungkin dipecahkan ( this case is impossible to be solved)

Tak mungkin= impossible For example: Kau dan aku tak mungkin bersatu = you and I are impossibleto be together.

I think you probably mean "tak mungkin" which in that case would be impossible. I have not heard of munking, but it is possible that it is a indonesia specific word