A wealthy person; someone with considerable assets or fortune (somewhat formal).
富者は慈善事業に寄付をした。
The wealthy person donated to charity.
あの町には多くの富者が別荘を持っている。
Many wealthy people have vacation homes in that town.
富者と貧者の格差が社会問題になっている。
The gap between the wealthy and the poor has become a social issue.