Etymology

wack

W4A1C3K5

Today it means: Annoyingly or disappointingly bad, in various senses; lousy, corny, cringy, uncool, messed up. Full definition →

English wackybf.
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wack · adjective, noun1

  1. Englishwhack
  2. Englishwackybf.
  3. English todaywack

Back-formation from wacky. Alternatively, possibly a blend of white + black, in the sense that it may appear black on the outside, but it's really white on the inside. Compare oreo.

wack · noun2

Clipping of wacker (“a Liverpudlian; a resident of Liverpool, England”).

Etymology from Wiktionary, CC BY-SA 4.0.