conjunction
not only ... but also; moreover; furthermore
Formal written conjunction used to add a stronger or additional point. Often follows a statement and introduces a further fact or argument. Equivalent to 'not only that, but also'.
He is an excellent researcher. Moreover, he is also outstanding as an educator.
この計画は費用がかかる。しかのみならず、時間も大幅に必要とする。
This plan is costly. Furthermore, it requires a great deal of time.