Very quickly; at great speed (from Hawaiian, meaning quick or fast).
From Hawaiian 'wiki' meaning quick. Adopted into English, particularly in Hawaii and regional American English. The repetition intensifies the meaning.
This word shows how English is still borrowing from other languages! 'Wiki' became world-famous through Wikipedia, but Hawaiian speakers have been using 'wiki' to mean 'fast' for centuries—it's actually the origin of the tech term!
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