noun
A person who borrows something, such as money, a book, or equipment. Often used in formal or legal contexts.
図書館の本の借用者は、期限内に返却しなければならない。
Borrowers of library books must return them by the due date.
この契約書には借用者の署名が必要です。
This contract requires the borrower's signature.
借り手 is a more common and general word for 'borrower', while 借用者 is more formal and often used in written or legal contexts.
Compound of 借用 (borrowing) and 者 (person).