maddeningly

In a maddening manner.

Japanese Meaning

苛立たしいほどに / 腹立たしく / イライラさせるように

She smiled maddeningly, hiding the answer I needed.

彼女は苛立たしいほどの笑みを浮かべて、私が知りたかった答えを隠していた。

Sense（1）

In a maddening manner.

Hardman ran to the corner and jumped into a trishaw. The driver was maddeningly slow and stupid.

more maddeningly

（ comparative ）

most maddeningly

（ superlative ）