noun, noun or participle which takes 'suru', transitive verb, noun which may take the genitive case particle 'no'
forgery; apocryphal work; spurious article
Refers to a work (art, document, literary piece) that is falsely attributed or fabricated. Can be used as a noun, with する to mean 'to forge', or as a の-adjective.
この絵は偽作だと鑑定された。
This painting was appraised as a forgery.
彼
He forged letters by a famous writer.
偽作の古文書が市場に出回っている。
Forged ancient documents are circulating on the market.