follow Dictionary.com

Know how to use "fewer" and "less"? Find out.

on the ball, be

Also, have something on the ball. Be especially capable or efficient, as in These programmers really have a lot on the ball. This term originated in baseball, where it was used for throwing a pitch with exceptional speed, spin, or some other deceptive motion. [ ; early 1900s ]
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Word Value for on

2
3
Scrabble Words With Friends