One with an obsessive interest in something, particularly (originally derogatory) obsessive Japanese fans of anime or manga.
Frequency
Pronounced as (IPA)
/əʊˈtɑːkuː/
Etymology
From Japanese オタク (otaku, “anime obsessive, geek”) originally used in reference to the 1982 Macross fandom, from the honorific form お宅 (otaku, “you”), from the honorific form 宅 (taku, “home”) ("your house").