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1.
A certain air about Diego that makes him who he is; the way he acts, talks, and carries himself with confidence. When one's Diegoness is lost, they begin to act unlike themselves and those around them start to wonder what has happened to change him. Usually after losing one's Diegoness, those who truly care, and notice the change in attitude, will try to figure out what is wrong. They will stick by his side until one's Diegoness has returned. One thing will never change though; with or without his Diegoness, Diego is extremely helpful with other's problems, even if he needs help from others to deal with his.
It killed me seeing you so blegh..you just weren't Diego..u had lost your Diegoness...but I'm glad to see that you've gotten it back.
by Alex Nash March 10, 2008
 
2.
Noun.
The presence of Diego Luna, and his sexy self.
Dirty Dancing 1 was pretty great, but it lacked in Diegoness.
by Yellopebble January 01, 2010