It means "later" or "bye" in Toronto Slang. Mainly used by Toronto Mans to be exact. Also sometimes know as "you don't know"
Example #1: Toronto Man-"Yoo,mans gonna head out fam,dunno"
Example #2: Toronto yute: " I swear mama,I dunno who did it"
by Black Airforce Nigga May 18, 2020
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crafter_09;You do you think livarpool is winning the uel

Flatgus:I dunno
by Monks97 July 21, 2023
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knows exactly what it is, what it means, AND what it does
by creeperdj February 27, 2019
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The fusion of Dunsparce and Hypno (or, alternatively, Dunsparce and Deino). Dunno what else it could mean.
Person 1: What would a fusion of Hypno and Dunsparce be called?
Person 2: …Dunno.
Person 1: That’s it!
by HopHoppipHarvest May 20, 2021
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British slang for hello or hi it's used as a type of greeting
by R U B Y April 26, 2022
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