[wak], (Noun)

Definitions:
- used as a familiar term of address, chiefly in Liverpool
(e.g: ‘Gorra light 'ave yer, wack?’)


Phrases:

Origin:
1960s: of unknown origin

[wak], (Adjective)

Definitions:
- bad; inferior
(e.g: a wack radio station)


Phrases:

Origin:
1930s: probably a back-formation from wacky

[wak], (Noun)

Definitions:
- an irrational or eccentric person
(e.g: the kids were learning to live with the idea that Dad was a wack)

- worthless or stupid ideas or talk; rubbish
(e.g: this track is a load of wack)


Phrases:

Origin:
1930s: probably a back-formation from wacky