孜し々しとして

expression

assiduously; diligently

A literary, somewhat old-fashioned adverbial phrase meaning to work steadily and diligently without giving up. Often used in formal or written contexts.

• 彼かれは孜し々しとして研けん究きゅうに励はげんだ。

  He devoted himself assiduously to his research.

• 孜し々しとして働はたらく姿すがたは周しゅう囲いの模も範はんとなった。

  His diligent work set an example for those around him.