adverb, adverb taking the 'to' particle
vigorously; really getting stuck into
Mimetic adverb describing doing something with full energy, commitment, or immersion. Often used with と and verbs like やる, 取り組む, or 入る.
彼は新しいプロジェクトにずぼりと取り組んだ。
He threw himself vigorously into the new project.
休みの日は一日中ゲームにずぼりと入り込んでしまう。
On my days off, I get completely absorbed in games all day.