作さく者しゃ不ふ明めい

noun which may take the genitive case particle 'no'

anonymous; of unknown authorship

Used to describe a work whose author is unknown, such as an anonymous poem, painting, or manuscript.

• この絵えは作さく者しゃ不ふ明めいだが、江え戸ど時じ代だいのものらしい。

  This painting is of unknown authorship, but it seems to be from the Edo period.

• 作さく者しゃ不ふ明めいの詩しが古ふるい文ぶん献けんに残のこっている。

  An anonymous poem remains in an old document.