Egregious.

Bad (not good), inauthentic, of an inferior quality, contemptible, lacking integrity, lame, or strange.

“Every record they ever made was straight-up wack.”

Crazy, mad, insane.

The sound of a heavy strike.

The strike itself.

The stroke itself, regardless of its successful impact.

To hit, slap or strike.

To kill, bump off.

To share or parcel out; often with up.

“to whack the spoils of a robbery”