Questions & Answers about Masalah ini menyebalkan.
In Indonesian, demonstratives like ini (this) and itu (that) usually come after the noun.
- masalah ini = this problem
- masalah itu = that problem
This is different from English, where this comes before the noun.
Menyebalkan is a verb form that means something like to be annoying / to cause annoyance / to be exasperating in this sentence.
So Masalah ini menyebalkan literally has the structure:
- Masalah ini = this problem
- menyebalkan = is annoying / is exasperating
Indonesian often uses forms like this where English might use an adjective.