noun
being absorbed in writing popular novels (cheap fiction); being absorbed in writing something to amuse oneself
A yojijukugo describing a state of being completely engrossed in writing light, popular, or self-amusing fiction. Often carries a nuance of carefree, self-indulgent literary activity.
彼は仕事を辞めてから、毎日戯作三昧の生活を送っている。
Since quitting his job, he has been spending every day absorbed in writing popular fiction.
They say this author made a living in his youth by being absorbed in writing light novels.