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1.
A retards pernouciation of retard. Usually used in the context of calling someone a retard. Used with the hand jesture of pulling the thumb and index finger against the upper part of your chest.
"I'm a nee nar."
by James Hickey March 30, 2004
 
2.
used in northern circles as a mixture of no idea and dont know (nee idea and dinnar)
wheres Mr X gone? Nee nar
by katherineyu November 20, 2007
 
3.
This word can mean sexualy confussed.

It could also be used as another random word like meh.
' You're so nee nar'
by Slpendific September 29, 2006