whacking

Present participle of 'whack'; hitting or striking something with force.

"He was whacking the ball."

Informal. To a very great extent; extremely or considerably.

"It was whacking cold outside."

The act of hitting something or someone forcefully and repeatedly.

"He gave the ball a good whacking."

Informal. Very large, considerable, or impressive in size or amount.

"That's a whacking great price!"