Top Definition
Anything bad in any way.

The word evolved from the word "gank" via the "izn" language (popularly used by rap artists). Why the definition of the word "giznank" became so detached from the meaning of the slang word gank is unknown...
Man, that Nickelback concert was so giznank!
by Andy Hall June 15, 2004
1 Word related to giznank

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