In Japan: an otaku is someone without a social life whatsoever and is an insult of the highest regard. There is a negative stigma associated to the phrase otherwise that involves a Japanese murderer who killed women because "they didn't have smooth faces like women in anime."
In America: a badge of honor worn by fans of anime, in lieu of simply calling themselves anime fans. Overused slang that has lost its meaning to many fanboys and fangirls.
In Japan: "With the amount of pornography that man buys, it's no wonder they consider him a disgusting otaku."
In America: "Dude, I love Sailor Moon and Utena because they have lesbians in it. I'm such an otaku! ^___^"
by Maikeru November 29, 2003
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Otaku is rooted from the Japanese word オタク and can be used in many different ways the most common is refers to someone who is obsessed with Japanese culture specifically in Manga, Anime, Cosplay and such, The Japanese definition of Otaku is a nerd or weirdo.
"Gosh, Miranda Sings is such an otaku she is always watching some form of Anime."

"Look at him he is such an Otaku always playing with Pokemon trading cards."
by Ihatetofu March 7, 2017
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dj_gs68 is a very light version of an otaku. He watches anime, looks at hentai, yet is able to have friends.
by dj_gs68 November 3, 2003
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Someone who believes they are Japanese, despite knowing only about four words of the language. Often reuses the same words over and over within the same sentence.
omg neko-chan THAT IS SOOO KAWAIIIII! ^____^ BAKA BAKA
by AndyAML February 11, 2004
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a person who will starv for manga. he will live a nother day just to see his beloved anime, he will even give up girls and life in general so he can read the latest manga.otaku is like some one who has an obsession with anime and maybe like hentai and stuff.i dont really wanna say too much bad stuff about otaku....because i am one.........
"sally is a goddamn otaku!''
by Anonymous June 16, 2003
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there are several definitions of "otaku"

1) polite(correct) way of saying house
2) many people mistake the actual definiton of otaku when it comes to things such as "anime otaku" or "game otaku"
it used to be a insult but recently, the definition has changed to a more positive meaning, although the word can still be used as a insult, it is more commonly used as a compliment
Ex. anata wa computer otaku desu ne (your a computer otaku)

although it is unclear as to when the definition switched, many believe that it may have happened with popularity of animes and mangas going up

by fforigens0 March 14, 2009
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Originally a Japanese term for "your house," "otaku" now refers to that bizarre suubculture that is obsessed with Japanese culture.

At least, that's what the otaku themselves would see it as. In reality they are a group of weirdoes so socially inept and obnoxious that other weirdoes cross the street to avoid them (on the rare occasions the otaku ventures outside). They really only like manga and anime, and seem to think that reading a comic or watching a TV cartoon originally intended for Japanese infant school students while wearing a too-tight shirt with random kanji characters emblzoned on it makes them a venerable Eastern sage.

The otaku believes that millennia of Japanese history, art and philosophy is irrelevant compared to a comic about bug-eyed schoolgirls battling robot space ninja goblins.
Otaku: "Worthless peasant gaijin! My weird enjoyment of comics that were written for children, despite the fact that I am a pasty grown man, means that my wisdom far outstrips yours! Can you smell sweat?"
by Muttering Master March 6, 2007
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