敏びん活かつびんかつじ字FuriganaMeanings1na-adjective, nounquickness; alacrity; promptnessDescribes swift, efficient action or mental agility. Often used in formal or written contexts; less common in casual speech.彼かれの敏びん活かつな対たい応おうで問もん題だいはすぐに解かい決けつした。