noun
forged book; spurious book; literary forgery
Refers to a book that is not genuine, often a counterfeit edition or a work falsely attributed to an author.
その古書店で売られていた写本は偽本だった。
The manuscript sold at that used bookstore was a forgery.
彼は有名作家の偽本を集めている。
He collects forged books of famous authors.