効こうTop 20000MeaningsNoun1. efficacy; benefit; efficiency; effect; result; successKanji used効be effectivePitch accentこうUsed in vocabulary効こう能のう書がきstatement of the efficacy of a medicineNoun速そっ効こう性せい肥ひ料りょうquick-acting fertilizer; quick-acting fertiliserNoun争そう点てん効こうcollateral estoppel; issue preclusionNoun運うん動どう残ざん効こうmotion aftereffectNoun