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1.
Adj. The ability to do whatever you want.
I'm macadocious, so I do things when I want.
by Cinnamn1 May 21, 2006
 
2.
Something exceedingly good almost to the point of excess.
The iPod 16 is expected to be so Macadocious that it is expected to serve you a cup of tea along with the morning newspaper.
by GandalfTheGrey16 February 23, 2011
 
3.
Adj. When referring to an object, expresses enthusiasm:
I definitely love your new T-shirt. where did you get it? It's really macadocious.
by Fredecile December 19, 2006