Immigrant, Migrant
Noun
いじゅうしゃ
国外移住者になるのは容易なことではない。
It’s not easy to be an international immigrant.
Someone who has to shift their dwelling is someone who moves their home (and in this case) to another country. They are an emigrant / immigrant. Welcome to this country, friend!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.