be on the ball

slang To be attentive, knowledgeable, and quick to take action. I'm so glad that my assistant is always on the ball because I'm too scatterbrained to manage my schedule on my own. I can't believe Molly got that report done so quickly—she's really on the ball.

be on the ball

(informal)

to be quick to understand and to react to things I rely on my co-driver to be on the ball. I didn't sleep well last night and I'm not really on the ball today.

Common Names:

Name	Pronounced	Usage
NaİMe	-	Turkish
Coinneach	-	Scottish
Leonard	LEN-ərd (English), LAY-o-nahrt (Dutch)	English, Dutch, German, Ancient Germanic
Cedar	SEE-dər	English (Rare)
Elise	e-LEE-zə (German), e-LEE-se (Norwegian, Danish, Swedish), i-LEES (English), i-LEEZ (English)	German, Norwegian, Danish, Swedish, Dutch, English
Orvokki	OR-vok-kee	Finnish