What percentage of all purchase are made on an impulse

“Up to 20% of the average household's grocery bill comes from items that were purchased on impulse alone.”

Explanation:

1. frenetic

Frenetic: Wildly excited; frantic, frenzied.

2. egregious

Egregious: Extremely bad, flagrant.

3. piercing

Piercing: (when describing a sound) loud or shrill; sharp.

4. shabby

Shabby: showing obvious signs or wear or long use; having an unkempt appearance.