奇き効こう

noun

remarkable effect; miraculous efficacy

Used for a surprisingly good or almost miraculous effect, often of a medicine, treatment, or method. Somewhat literary or formal.

• この新しん薬やくは奇き効こうを奏そうした。

  This new drug produced a remarkable effect.

• その治ち療りょう法ほうは奇き効こうがあると評ひょう判ばんだ。

  That treatment is reputed to have miraculous efficacy.