Definitions

1. noun

a silly or foolish person; a person who is considered eccentric or unconventional

“The wack artist’s eccentric paintings shocked the crowd.”

2. verb

to defeat decisively, especially in sports

“The team got wacked by their opponents in the championship game.”

3. adjective

ridiculously bad or unimpressive

“The wack movie was universally panned by critics.”

4. interjection

used to express excitement or surprise

“Wack! I just won the lottery!”