Uchiha Itachi is one of the main villains in the hit anime/manga series, Naruto. Currently a member of the Akatsuki organization, he seeks to unlock the true potential in his younger brother, Sasuke Uchiha. Itachi, being the prodigy of the Uchiha clan, killed all of the members of his clan, aside from his younger brother Sasuke. When asked why he destroyed his clan, he simply answered, "To gauge my strength", or something to that element. He tells his younger brother that the Mangekyo Sharingan that he possesses is not merely a kekkai genkai, but it has a secret ultimate purpose that has yet to be revealed.

The Uchiha clan specializes in Katon (fire) Jutsu techniques. The power of said techniques can be heightened with the use of the Sharigan. The Uchiha clans kekkai genkai. (blood line limit) Another, more powerful form of the Sharingan is the Mangekyo Sharingan, possessing the ability to cast genjutsu instantly without flaw. One of the techniques that Itachi favors is Tsukyomi (Moon Reader). This genjutsu technique can submerge the victim into a limitless world that Itachi has complete control over. He can distort gravity, time, existence, and creation in this world. It's absolutely impossible to dispel.

Itachi told his younger brother Sasuke that, if he was to obtain the Mangekyo Sharingan, there would be three people capable of using it. This implies that Kakashi is capable of obtaining the Mangekyo Sharingan.
Uchiha Itachi: "If you are to obtain the Mangekyo Sharingan, there will be only 3 people on this earth capable of using it."
by Wesley Fisher June 14, 2007
A fictional character from the popular manga and anime, Naruto. Itachi has two things his brother will never have: a nearly unreachable level of power and good looks (I'm sorry, Sasuke fans). The prodigy is skilled in many ninjustsu, genjutsu, and taijutsu. His most well known is his Tsukyomi (one of the two main techniques that come with the Mangekyou Sharingan), which is ultimate torture in the form of either bad memories or 72 hours of a pain of Itachi's choosing.

Itachi's name means weasel. In Japanese culture, weasels are said to be a bad omen.

The Uchiha had a thirst for power, reflected by the fact that he was willing to kill his own best friend, Uchiha Shisui. It was believed for a time that Itachi had murdered the rest of his clan (with the exception of Sasuke) because he is a sadistic bastard and never cared about anyone but himself. However, before his death (which was caused by his own power lust, ironically), we find out that he had been ordered to kill his family and he had only managed to have Sasuke spared because he threatened to go public with the plan to kill the Uchihas. It was also thought that Itachi murdered everyone on his own, but he did recieve a hand from Uchiha Madara.

In Naruto Abridged (a parody of the anime), the relationship between Sasuke and his brother is turned comedic. The duck butt-haired ninja says he hates Itachi because "he took the last Klondike bar."

Itachi is among the most popular characters from Naruto, due to his strength and good looks. He appears in many fanfictions, frequently OOC. However, when he is shown as his normal stoic self in such stories, it is often because he had a troubled past, and he easily steals the spotlight of the tale.
Jashin, that last chapter of "My Weasel" was stupid! Uchiha Itachi was really OOC. xItachixFanxPersonx writes even worse than Stephanie Meyer!
by TheRoyalCourtJester(ofyaoi) March 25, 2009
A super hot bad-ass guy who is stronger than anyone you know and can bench more than 500kg. He is extremely skilled at genjutsu with his super high levelled Sharingan which was stolen from his body by his younger brother, Sasuke-kun. Itachi, despite being crazy strong, is really kind and psycho. He killed his entire clan just so that his younger brother could kill him and become village hero.
Figure 1: Hey, isn't he the one who killed his entire clan?

Figure 2: Yea, Uchiha Itachi.

Figure 3: Omg , why is he so damn hot? and strong!
by Itachi's lover July 12, 2020
Itachi Uchiha is the older brother of Sasuke Uchiha, child prodigy from the Uchiha Clan. During the times of Itachi’s childhood he was hailed as the child prodigy of the Uchiha Clan (before Sasuke was born.) He was also the son of Fukago and Mikoto Uchiha, Fukago Uchiha was the leader of the Leaf Police force, and Mikoto Uchiha a Jonin (high rank ninja.) Soon at the age of 10 Itachi surpassed his parents and possibly everyone and became a Jonin. He joined ANBU at 13

(Special assassination and Tactical Force.) After this he went in part to join the Akatsuki (a force

which has people who are “abnormal”) But soon the amount of people form this clan decreased due to his assassination of his own clan.
You’re Itachi Uchiha from the Uchiha Clan, huh?
Aren’t you one of the last members of the Uchiha Coan
by Tacky Tan Boi July 24, 2018
Itachi Uchiha:Noun
Itachi, the most bad-ass character on the Naruto series. Not only is he good looking, but he's really smart and drives a range rover! Everyone loves Itachi
Guy 1: "You man, do you see that guy right there?"
Guy 2: "The really good looking one that's benching 350 with girls all over him?"
Guy 1: "Yeah, he's totally an Itachi Uchiha"
Guy 2: "I wish I could be as cool, handsome, and smart and Itachi".
by smartipantsmagee October 11, 2012
The guy who could wreck everyone without trying, and if u did, it meant he was either going easy on u, or it was madara uchiha
Hey that guy beat everyone in the room with no difficulty ! He's such an Itachi uchiha!
by Persan January 30, 2019