なお一いっ層そう

expression, adverb

even more; further; all the more

Emphasizes an increase in degree or intensity beyond what is already present. Often used in formal or written contexts.

• 彼かれの説せつ明めいを聞きいて、なお一いっ層そう混こん乱らんした。

  After hearing his explanation, I became even more confused.

• 努ど力りょくを続つづければ、なお一いっ層そうの成せい果かが期き待たいできる。

  If you keep making efforts, you can expect even greater results.