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Glite Dictionary
on the ball

on the ball

9 5.6
Quick to notice and understand things
  • idiom
  • Informal
translation icon : atento
  • Now, you should really listen to her because she is on the ball when it comes to managing the team.
  • keep your eye on the ball
  • really on the ball
  • keep an eye on the ball

Joe Biden was more on the ball than some anticipated.

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Examples

  • My kids would not have done as well with a teacher who was less on the ball as they tested.

    Blog text (13)

  • Joe Biden was more on the ball than some anticipated.

    Megyn Kelly

  • That led me to realize that Christian thinkers could in fact, have something on the ball that they could be quite brilliant.

  • prMac is always on the ball whenever I need to get our PR out there.

    Blog text (15)

  • It's weird—our new contractor is seriously on the ball and takes the reins with everything.

    Blog text (29)

  • Glad to see you boys are on the ball and ready to tackle the project.

  • Wow, Ms. Sandusky is really on the ball this year with her innovative ideas.

Synonyms

alert
vson the ball
82 2.8

Quick to notice and respond to what is happening

includes knowledge and quick understanding as well as mere attentiveness
quick
vson the ball
61 3.2

Able to understand and answer fast

adds attention and practical knowledge beyond mere speed of response
sharp as a tack
vson the ball
  • Informal
5 6.7

Able to understand new things very quickly

is more practical and attentive, not only exceptionally clever
quick-witted
vson the ball
4 4.8

Able to think and give smart fast answers

is broader, adding knowledge and steady alertness beyond clever replies
quick on one's feet
vson the ball
4 5.2

Able to think and answer quickly in surprising or difficult situations

covers general quick understanding and steady knowledge beyond situational response
on the game
vson the ball
  • Informal
3 8.2

Fully focused and ready to do your best

is similar but stresses knowledge and quick reaction as well
quick on the draw
vson the ball
2 5.6

Able to respond quickly under pressure

is less limited to high pressure, including calm, knowledgeable alertness
quick on the uptake
vson the ball
1 6.7

Able to understand new ideas very quickly

also implies alertness and practical readiness to react, not only understanding
on it like a car bonnet
vson the ball
  • Slang
9.9

Very quick to begin working on a task

is broader, adding steady knowledge and general alertness not only intensity

Antonyms

slow
  • Offensive
297 4.4

Not quick to learn or understand things

unaware
175 2.9

Not knowing that something is happening or true

How Alert

quick-witted
4 4.8
sharp
152 3.3
on the ball
  • Informal
9 5.6
to alert
255 2.3
attentive
61 3.0
aware
∞ 2.7

Surface Forms

on the ball positive

Morphology

on + the + ball

The meaning 'alert, knowledgeable' cannot be derived from the literal words 'on' and 'ball'—being physically 'on a ball' does not transparently convey attentiveness. The phrase is idiomatic (likely sports-derived) and its figurative sense is not predictably inferred from the parts, so a B1 learner who only knows the constituents would probably not understand it.

Etymology

On the ball may come from sports like baseball. If a player keeps their eyes on the ball and is ready to move, they can react quickly, so the phrase now means 'alert' or 'quick to react'.