細ほそめに

adverb

slightly open; narrowly; finely; thinly

Describes doing something in a slight, narrow, or fine manner. Often used with verbs like 開ける (open a little), 切る (cut finely), or 目を開ける (open one's eyes narrowly).

• 窓まどを細ほそめに開あけて、風かぜを入いれた。

  I opened the window slightly and let the breeze in.

• ネギを細ほそめに切きってください。

  Please cut the green onion finely.