もっぱら

mainly, exclusively

m o̞ p̚ p a̠ ɾ a̠ → 専ら
adverb Rare #31,332
mainly, exclusively
JA: 彼はもっぱら日本語の本を読んでいる。
EN: He mainly reads books in Japanese.

私の成功はもっぱら彼の努力おかげだった

My success was entirely due to his efforts.

私の成功はもっぱら幸運の賜物

My success is entirely due to luck.

その特権もっぱらご婦人だけ限られている

That privilege is reserved exclusively for ladies.

私はもっぱら推理小説を読む

I read mostly mystery novels.

もっぱらですよ

It's just a rumor.

— 生きる (1952)

工場は紳士服をもっぱら生産している

The factory primarily produces men's clothing.