なんです
nandesu

Auxiliary Verb

1. it is assuredly that ...; can say with confidence that ...

Polite
Related to のです
わたくしいたいのは彼女かのじょなんです。
watashiga aitai nowa kanojona ndesu
It is her that I want to meet.
海外かいがい旅行りょこうわたくしたのしみのひとつなんです。
kaigairyokōwa watashino tanoshimino hitotsuna ndesu
Traveling abroad is one of my favorite things.
Other forms: