21 year old virgins who dwell in the darkness of their moms basement. Are almost always people with anime profile pics and weeaboos (incarnations of the devil).
guy 1: dude you watch anime? what a weeb lmao
guy 2: im not weeaboo. im a otaku
guy 1: *calls the exorcist*
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teh deliciously amazing and kick ass wife of nero
wha? otaku and nero are married? theys gonna have some awesome children
by Brandon Whitman June 18, 2008
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Basically Japanese for "nerd".

It has been adopted as a description by many anime fans who are either too retarded to realize it's an insult or are so obsessed with Japanese culture that being called a Japanese word is great no matter the meaning. These sub-categories of anime fandom need to get a proper education and get a life, respectively.
I'm so otaku >.< :D :D :D

Shut the fuck up you retarded piece of shit. Otaku is a fucking insult, okay? Learn to read and maybe you'll figure out these "complicated" definitions. Fucking illiterate bastard.
by Brodo_Swaggins October 22, 2016
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Sometimes used in reference to a fan of anime (Japaense cartoons, examples are the popular television show Dragon Ball Z or Pokemon. *proceeds to stab eyes out with spork*), although actully meaning geek or nerd in Japanese. Think about that, its not very hard to figure out the transition.
by anonymous February 11, 2003
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1. My girlfriend's dyslexic (allegedly) ex boyfriend.
2. Some Japanese word
3. A word I learned a few nights ago
Annoying Nerd: i am otaku
your more of one of these popular kids
Awesome girl: oh for fucks sake you are not, stop pretending to be japanese
Annoying nerd: otaku is jsut a word for a obsessive nerd... we are gamers, comics cartoons etc its a general word
Awesome girl: I dont fucking care
Annoying nerd: in schools there is the chart of ranks baiscly, each person in each year is in a class on that chart, popular kids like the preps and all footballers etc etc are neard the top and it works down to us geeks and nerds. i am in the geeks and nerds section we are baisicly seen as cast outs, we watch cartoons, play massive abounts of games and generally are nerds all around.
Awesome girl: I am aware of sub-culture...I dont need someone like you explaining the obvious to me...you may not be aware of this but I am not a spacker.
Annoying nerd: (insert whining nerd gibberish

You get the idea...
by Tom.111088 February 24, 2007
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Otaku is usualy known as a "Nerd" But really is a type of hentai/yaoi. Otaku means "Love of little boys" And not a nerd.
Ew! Were you looking at Otaku again?

I was looking at Otaku yesterday
by Jacob1 May 28, 2005
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1. (This is how it is used in Japan) Otaku means a person who sits alone and does nothing all day day and might watch anime, read manga, ect. In Japan, it is a term that is not taken as a complement.

2. (This is used in other places) An Otaku is a person who is obsessed in a fandom; usually Japanese. In other places (not Japan), it is not taken offensively.
1. Don't hang around with Haley, she is a major otaku.

2. That otaku can sing the hard to sing Japanese song and watches a lot of anime. (That sucked)
by KawaiiNeko December 24, 2014
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