1 intelligent

2 clever

3 bright

4 smart

5 acute (of sight and hearing)

1 lit. new bud

2 fig. new and original

1 bright

2 witty

3 intelligent

1 to reveal one's talent (idiom)

2 to rise above others

3 to distinguish oneself

1 to go deaf

2 to lose hearing

1 wise after the event (idiom); with hindsight, one should have predicted it

1 exceptionally intelligent (idiom)

1 extremely bright (idiom)

1 sharp ears and keen eyes (idiom)

2 keen and alert

3 perceptive

1 even the wisest can have a momentary lapse in judgment (idiom)

2 every man has a fool in his sleeve