難度

なんど【難度】

the degree of difficulty 《in (doing) sth》.

●難度を上げる[下げる] raise [reduce] the level of difficulty.

高難度 〔各種競技の技の〕 a high degree of difficulty.

●高難度の extremely difficult 《skill》; 《feats》 with a high degree of difficulty.

最高難度 the highest degree of difficulty.