1. Japanese for "nerd."
2. A big anime fan. Unfortunately, the name has been disgraced thanks to the large majority of otakus being 240 lb, 30-year-old white men who don't have a life.
by dj gs68 July 08, 2003
In Japan the word otaku is used to refer to someone who is extremely obsessed with something. Americans have adopted it to refer to anyone in their culture who is obessesed with the Japanese culture. Americans do not use it "incorrectly" as many people claim, they have just re-defined the word.
That Mallory girl is such an otaku... She watches anime, has been to more cosplay conventions then I can count, and can read, write, and speak Japanese!
by Wonderful Aishas September 05, 2005
an otaku is a word commonly used to describe someone who is either obsessed with Japanese culture or a geek who spends all his/her time watching anime and never leaves the house. these are both false; that is the definition of a weaboo. an otaku is simply a fan of anime and manga and stuff like that. not a geek who has no life; not a weaboo. but sometimes, otakus try too hard and do turn into weaboos. for a better idea of the difference between otakus and weaboos, read my definition on weaboo.
~Pauly-T-Swizzle
me: hey, do you watch anime?
friend: anime sucks.
me: no, you suck. anime is good.
friend: your such a weaboo.
me: no, im an otaku.
by Pauly-T-Swizzle April 20, 2013
Otaku are smelly, furry, plump creatures that are usually found in their natural habitats: their own mother's basements or in their dark rooms where the only sources of light are the bright glow of their computers or television
my friend is an otaku, he stays in his room on the computer and TV all day
by Amos Nusheg February 19, 2008
Often used as an insult in Japan for someone who is obssessed with anime, manga, video games etc.

Used in western culture to identify who reads manga and watches anime. It is sometimes confussed with weeaboo-ism, in which said person has an infactuation with japanese culture, i.e. everything including manga, anime etc.
Otaku boy: Did you read the latest chapter of Naruto?

Otaku girl: Yeah, did you see Minato completly own Madara with a Rasengan, Youndime 4 ever *fist pump*
by ShadowScream July 29, 2010
Otaku -//noun//-

A person often described to be as a loser who stays at home and watches anime, plays video games 24/7 and constantly talks about Japan being superior to every country in the world.
These assholes often talk non-stop about anime and other Japanese related media and entertainment.
Most Otakus' favorite video game company is, Nintendo and often thought as, nerds, among nerds.
Slightly less annoying than a weeaboo

Synonyms: Anime Freak, Weeaboo, Japanocentric.
Antonyms: Regular guy, Cool person, Smart guy
Misspellings: Otak
Hey Richard are you a weeaboo? No, I'm a slightly less annoying, asshole, Otaku.
by CaptainFabulous January 20, 2015
Someone (such as me) who has an extreme love and obsession with Anime, Manga, Japanese Video Games, Cosplay and anything that has to do with Anime in general.

As you may notice most people define Otaku as someone who has nothing else better to do with their life but sit at home and watch/do the things I have listed above. Which is NOT true. We Otaku have many things to do, wether it's watching Anime or stressing over if our Cosplay is going to get here in time for the next Convention/Expo, I can assure you it is over infinity times better than what most of the people that say those things do. Which is most likely sitting at home eating them selves to death because they wish they had something to do.

And to note that in a previous definition of Otaku, that person said that the word "taku" means home and that that links to THEIR so-called definition. If you know Japanese at all you would know that Otaku (おたく) means "Geek" or "Nerd", which clearly shows our (being us otaku) love for Anime, Manga, Cosplay, etc.

I made this to show my love for Anime and to stand up for the TRUE MEANING OF OTAKU!!!!!!! >:O
Yumiko: "So, how much of an Anime fan are you?"

Sayuri (me): "I am a MAJOR "OTAKU!!!!!!!" ^ ^"
by otakueien July 09, 2011

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