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wholly; solely; entirely; exclusively; devotedly; fixedly
principally; mostly; chiefly; mainly
彼は専ら研究に没頭して社会と距離を置いた。
He devoted himself solely to research and distanced himself from society.
休日は専ら読書と散歩に時間を費やしている。
On holidays, I spend my time exclusively on reading and walking.
最近は専らオンラインで買い物をしていた。
Recently, I've been shopping exclusively online.