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15.
A Main Character in The Naruto and Naruto Shippuden Series.

Itachi Uchiha. In the series Itachi is first shown as The Bad Guy and object of hate for Sasuke Uchiha his little brother. Itachi is shown to have killed his Clan except his little brother telling Sasuke to hate him. Itachi is paired with Kissame Hoshigaki. The two of them are members of Akatsuki(Next Bad guys). The goal of the Akatsuki is to collect the bijuu(Tailed Beasts) and or Jinchuriki(person with biju in side). Itachi talks with Naruto and asks him to save Sasuke and give Naruto a mysterious gift. Itachi then shows up in battle with his little brother. Itachi saves Sasuke from Orochimaru. They are both almost unable to fight, as he walks to "take Sauke's eyes" Itachi mumbles something then pokes Sasuke's forehead like he used to when they were kids before falling over dead.Afterward Madara(Another villain) reveals Itachi's true intentions to Sasuke.
Itachi was ordered secretly by the three top people of Konoha to eradicate the Uchiha clan before they did a coup'd etat. Itachi labored over His clan or The Village he loved. Itachi chose the village and killed his entire clan under the guise of a murderer who lusted to test his power. However he could not kill his beloved brother and made Sasuke see him as a murderer instead of anything else. He went afterward to beg that no one reveal the truth to Sasuke. His plan was to be the bad guy in order to Protect the Uchiha name and make his little brother a hero.
by CinderUzumaki October 02, 2011
 
16.
Weasel, literal meaning (appropriate in my opinion)
He is such an Itachi
by Karralmer July 28, 2010
 
17.
A blind, ded hobo from the manga series, Naruto.

Itachi is the first spawn of the Uchiha clan head. He is immediately recognized as a 'genius', amazingly skilled at ninja fighting/tactical abilities across the board, despite very little canonical evidence of this. Fugaku mostly ignores Itachi's little brother in favor of Itachi, which is ironic since generally it's the scorned child that goes and offs everyone.

Which is what Itachi did, incidentally, then he was busy being a troubled teen.

Shortly after the death of the Third Hokage, roughly five years later, Itachi returns to Konoha, this time under the organization, Akatsuki, and in pursuit of Naruto. Itachi's little brother is understandably incensed by Itachi's reappearance; he challenges him and gets PWN'd.

Thereafter, Itachi makes numerous random appearances, to no particular avail. He is apparently going blind, which makes it even more sad, because it's obvious he's never been to a seamstress in his life, and all of his clothes fit him like run-over shopping bags.

Then he dies.
1. Look, there goes Itachi. His brother is in the other direction, but take pity on the poor lump.

2. Itachi kills lots of people, including himself.
by Kalliel March 21, 2009
 
18.
A female Japanese insult, loosely translated as "Masculine Female"
"Look at that Itachi!"
"Sasuke's brother?"
"No! I was refering to Sakura!"
by Makaze March 26, 2008
 
19.
Uchiha Itachi is the other brother of Uchiha Sasuke. He is a "missing" S Class ninja and also a member of The Akatsuki, where his partner is the "famous" shark-man Kisame (Weilder of the Samehada). Uchiha Itachi murdered his best friend in order to obtain the Mangekyou Sharingan. Uchiha Itachi then murdered the entire Uchiha clan except for his younger brother Uchiha Sasuke. The reason for that is so that Sasuke could become strong enough to kill Uchiha Itachi.
The Japanese word "itachi" literally means "weasel." In which most people often make fun of Uchiha Itachi for that reason.
Itachi is usually interpreted as a femal or a transvestite. And a homosexual.
by iDeidara March 26, 2007
 
20.
An Uberly-gay Character from the anime Naruto. He totally sucks
"Itachi is so uberly gay he got killed by sasuke"
by Kealoha969 January 27, 2009