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Someone who has become mentally deranged.
He went dinny. You can visit him in the mental hospital. (Probably derived from Romany "dinlo").
by Le Macho August 09, 2006
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Another word for "dont" by Scottish people who cant spell it "Dinnae"
" I dinny ken how to spell Dinnae "

by Gemma =] October 31, 2007
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A common endearing term used by Plymouthians to describe someone of low intelligence, or lack of common sense. Origin unknown..!
"You're eating your Pasty the wrong way round, you've got to hold it by the crimp you dinny."
by DJXL May 07, 2018
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To dent, nick, scratch, or cut an object so slightly that it is nearly undetectable.
Ben: "What the hell dude! You dinnied my phone!"
Rich: "First off that's my phone, second it barely has a dinny in it."
by DennisInAtor March 29, 2015
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