に関わる
(Ni kakawaru)
involves / affects / concerns (seriously).
Connection rules
- +Noun + に関わる; attributive 〜に関わる + noun.
- +Weighty involvement — 'a matter of life / honor / future'.
- +Common nouns: 命, 名誉, 信用, 将来, 評判.
Examples
1.
これは命に関わる問題だ。

Kore wa inochi ni kakawaru mondai da.
This is a matter of life and death.
「involves / affects / concerns (seriously)」
2.
会社の信用に関わるから、慎重に対応すべきだ。

Kaisha no shin'you ni kakawaru kara, shinchou ni taiou su beki da.
It concerns the company's credibility, so we should handle it carefully.
「involves / affects / concerns (seriously)」
Practice
I cannot keep silent about this as it is a matter that affects my honor.
これは私の___問題なので、黙っているわけにはいかない。
Romaji also accepted