short for 'I don't know' and another way saying 'no'
guy: what are you doing tonight?
girl: dunno

guy: do you want to meet up?
girl: dunno
by metalmilitia May 29, 2009
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a word that means you dont know, lost or arent bothered enought to tell you the reason why, who, where or when.
becuase you either dont want to tell or they wont mind their own business
who do you like:i dunno

whats you doing here:dunno broo
by jo-eeeey May 21, 2008
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There seems to be two versions: 'do not know' and 'do you know'. The first version sounds like one word 'dun-no' and the second more like two words 'due no'.
What is this thing?

Dunno.

or

Dunno what this is?

No.
by someothertwat December 05, 2016
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To state that you believe one has made a false judgment.
Girl: You should watch that video.
Guy: No. I don't want to.
Girl: I dunno, it's pretty funny.....
by Bmoore93 January 14, 2008
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Most popular is a common short for "Don't know".

But it's orgin is likely a direct contraction of:

Dunce + No = Dunno
I dunno why, but I am no dunce!
by In The Mindway May 18, 2005
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