Explanation
Not only... but also; as well as.
Formation
Verb-casual + のみならず + (も), い-Adjective + のみならず + (も), な-Adjective + のみならず + (も), Noun + のみならず + (も)
Detailed explanation
The ～のみならず～も grammar point is used to show that something applies not only to one thing, but also to another thing. This can be translated as 'not only... but also', or 'as well as' in English. The formation differs depending on whether it is used with a verb, い-adjective, な-adjective, or noun.
Examples
Kare wa eigo nomi narazu, furansugo mo hanasemasu.
He can speak not only English but also French.
Kono resutoran wa oishii nomi narazu, fun'iki mo subarashii desu.
Not only is this restaurant delicious, but the atmosphere is also great.
Kono apuri wa benri nomi narazu, anzen-sei mo takai desu.
This app is not only convenient but also highly secure.
Kanojo wa atama ga ii nomi narazu, supootsu mo tokui desu.
She is not only smart but also good at sports.
Practice
Grammar content sourced from hanabira.org.