のみならず
(Nomi nara zu)
not only X but also Y (literary).
Connection rules
- +V plain / i-adj + のみならず; na-adj + である + のみならず; noun + のみならず.
- +Most formal / literary of the 'not only' family.
- +Rare in casual speech — common in essays, news, and formal writing.
Examples
1.
彼は頭がいいのみならず、性格もいい。

Kare wa atama ga ii nomi nara zu, seikaku mo ii.
Not only is he smart, but he also has a good personality.
「not only X but also Y (literary)」
2.
この問題は日本のみならず、世界中で議論されている。

Kono mondai wa nippon nomi nara zu, sekaijuu de giron sa re te iru.
This issue is debated not only in Japan but around the world.
「not only X but also Y (literary)」
Practice
Not only children but also adults are fascinated by this anime.
このアニメは、___大人までも夢中にさせている。
Romaji also accepted