穎えい敏びんえいびんMeanings1nounsharp-minded; keen; acutearchaicArchaic word for mental sharpness; modern Japanese uses 鋭敏 (えいびん) for the same meaning.See also: 鋭敏「穎えい敏びん」は古ふるい文ぶん献けんで、頭あたまの切きれを表あらわすのに使つかわれた。穎敏 was used in old texts to describe sharpness of mind.