鋭敏えいびん
eibin

Noun
na-Adjective

1. sharp (eyes, ears, etc.); keen; acute; sensitive

えないひと聴力ちょうりょく鋭敏えうびん場合ばあいおうい。
mega mienai hitono chōryokuwa ēbinna bāiga ōi.
A blind person's hearing is often very acute.
Noun
na-Adjective

2. sharp-witted; shrewd; clever; astute; acute