無む二に無む三さん

noun, noun which may take the genitive case particle 'no'

with all one's might; single-mindedly; headlong

Describes doing something with intense concentration and determination, often rushing into it without distraction. Common in set phrases like 無二無三に～する.

• 彼かれは無む二に無む三さんに仕し事ごとに打うち込こんだ。

  He threw himself into his work single-mindedly.

• 無む二に無む三さんの努ど力りょくが実みを結むすんだ。

  His intense, single-minded effort paid off.

noun, noun which may take the genitive case particle 'no'

one and only; unique; unparalleled

Rare, somewhat archaic sense meaning something is the only one of its kind. More commonly expressed with 唯一無二 or 無二 today.

• この作さく品ひんは無む二に無む三さんの傑けっ作さくだ。

  This work is a unique masterpiece.