active and aware of things.

Their staff seems to be really on the ball, able to get projects done on time.

Related vocabulary: keep your eye on the ball

• beside
• beside the point
• beside yourself
• be sitting in the catbird seat
• be sitting on a goldmine
• be sitting on tail
• be sitting on your tail
• be sitting pretty
• be six feet under
• be skating on thin ice
• be skin and bone
• be skin and bones
• be slow off the mark
• be slow on the draw
• be slow on the uptake
• be sneezed at
• be sniffed at
• be snowed under
• be soaked to the skin
• be soft on
• be soft on someone
• be sold a pup
• be someone's cup of tea
• be someone's department
• be someone's flesh and blood