だけでなく

expression

not only ... (but also); not just; as well as

Used to add information, often followed by ～も or ～さえ. Connects nouns, verbs, and adjectives.

• 彼かれは日本にほん語ごだけでなく英えい語ごも話はなせる。

  He can speak not only Japanese but also English.

• この店みせは安やすいだけでなく、品ひん質しつも良よい。

  This store is not only cheap, but the quality is also good.