An abbreviation of the rhetorical question: “what do you know?”; a typical Australian expression of surprise.
Hey!, "whatsoever" IS a word, whadayaknow!
by nymphii August 14, 2007
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The shortened version of the phrase "What do you know?" and is a used as an expression of surprise
Guy 1: "Hey, The tallest man ever recorded was 8 feet 11 inches?"

guy 2: "huh well whadayaknow."
by nwiefi November 2, 2021
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