Nihoner

“Efficaciousness” in Japanese

Short answer
利き kiki きき

Efficaciousness in Japanese is “利き” (kiki). Full meaning: effectiveness, efficacy, efficaciousness; dominance (e.g. of left or right hand); tasting (alcohol, tea, etc.).

Looking for the other direction? Search any Japanese word in the Nihoner lexicon, or practise what you have learned in the learning games.