To be completely illiterate, or have no understanding of any language what so ever
If you spelled 'our', as 'are' is a minor example of being a dennee.
by nknknknkr May 14, 2012
To let your friends date a girl and then move in for the sloppy seconds after they break up, after the 3rd time it's considered an extreme "Dennee"
He is totally going Dennee on that girl I used to pound.
by John Spears October 26, 2010

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