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1.
someone who has reached the 11 out of a 10 scale on ghetto-ness; an extremely black person; Someone who makes Shaquita look like Barbara Bush; A person that makes Da'quantay look like Thomas Edison; A person who is so black they get locked up on contact with a po-po for no apparent reason.

It is an adjective.
Yo! Shaniqua! What the hell you talkin' bout?! i'm the most nigguh-fied gangsta up in this bitch. and you's just sum lame ass busta.
by nigguh-fied nigguh April 22, 2010
 
2.
To be owned in a demeaning manner.
WOw, just got my grades back. Definitely was nigguhfied.
by klauxxx May 28, 2010