オタク

desc

→ Arabic: أُوتَاكُو (ʔūtākū)

→ Arabic: أُوتَاكُو (ʔūtākū)

→ Bengali: ওতাকু (ōtaku)

⇒ Chinese:

Mandarin: 御宅族 (yùzháizú)

⇒ Mandarin: 宅男 (zháinán)

⇒ Mandarin: 宅女 (zháinǚ)

→ English: otaku

→ German: Otaku

→ Greek: οτάκου (otákou)

→ Hebrew: אוֹטָאקוּ (otáku)

→ Italian: otaku

→ Korean: 오타쿠 (otaku), 오덕후 (odeokhu)

→ Marathi: ओताकु (otāku)

→ Persian: اتاکو (otâku)

→ Russian: ота́ку (otáku)

→ Spanish: otaku

→ Thai: โอะตะกุ (ò-dtà-gù)

From お宅 (otaku), the honorific version of 宅 (taku, “home”), referring to 1982–1983 Macross fans, or perhaps earlier; see Wikipedia discussion.

2002, 山田裕康 [Yamada Hiroyasu], LDの可能性を広げる, page 11:

しかし、多くの友達にとってはそんなことにはまったく興味はなく、「またかよ〜」と飽き飽きしているのですが、「電車の時刻表」、「ポットン便所」、「明智光秀」、「テレビ番組の細かすぎるオタク」と、どんな話題からもルド君はそちらに持って行ってしまうのです。

Shikashi, ōku no tomodachi ni totte wa sonna koto ni wa mattaku kyōmi wa naku,“mata ka yo~” to akiaki shiteiru no desu ga,“densha no jikokuhyō”,“potton benjo”,“Akechi Mitsuhide”,“terebi bangumi no komakasugiru otaku” to, donna wadai kara mo Rudo-kun wa sochira ni motte itte shimau no desu.

2004, Jim Albert, Jay Bennett, translated by 加藤貴昭 [Katō Yoshiaki], メジャーリーグの数理科学 (上) [Major league mathematical science (first part)], page 58:

Statisticians are after all liable to be thought of as number geeks and graph makers, but that is obviously a mistaken interpretation.

統計学者は所詮、数字オタクやグラフ作成者と思われがちだが、それは明らかに間違った解釈である。

Tōkeigakusha wa shosen, sūji otaku ya gurafu sakuseisha to omoware gachi da ga, sore wa akiraka ni machigatta kaishaku dearu.

And now in Japan as well tea houses have come to be enjoyed not by eccentric geeks but by stylish women.

今や日本でも茶芸館が、エキセントリックなオタクではなく、おしゃれな女性たちに楽しまれるようになった。

Ima ya Nihon de mo chageikan ga, ekisentorikku na otaku de wa naku, oshare na josei-tachi ni tanoshimareru yō ni natta.

(chiefly derogatory) geek, nerd, freak, no-lifer; one who is obsessed with something to the exclusion of such things as social interaction.

Otaku#Etymology
The Super Dimension Fortress Macross
ja:オタク


妊娠

The "Nintendo fanboy" sense is from a shortening of 任天堂(にんてんどう)信者(しんじゃ) (nintendō shinja, “Nintendo believer”), written with the kanji for "pregnancy" to carry an infantile nuance.

ja-r

にんてんどう% しんじゃ

(slang, derogatory, video games) a Nintendo fanboy, Nintendrone


ゴキブリ

ゴキブリ (canonical)
ごきぶり (canonical)
gokiburi (romanization)
匹 (counter)

[ɡo̞kʲibɯ̟ɾʲi]

From 御器噛り (gokikaburi), a compound of 御器 (goki, “dish”) + 齧り (kaburi, the 連用形 (ren'yōkei, “stem or continuative form”) of classical verb 齧る (kaburu), “to bite, nibble”). This original form persisted up until the Meiji period.
Due to typographical errors, the か (ka) was omitted, while its original form still exists today in certain dialects. Variations of the word across dialects exist as well.
The "Sony fanboy" sense originates from "GK", an initialism of "Gate Keeper", a proxy server used by Sony and its various companies. Overzealous Sony fans were thus referred to as "GK-buri", or "GK-esque", which was ultimately corrupted into "gokiburi".

com

(slang, derogatory, video games) a Sony fanboy, Sony pony


痴漢

Chikan (body contact)
Nihon Kokugo Daijiten
ja:痴漢

Appears to be a borrowing from written Chinese 痴漢 /痴汉 (chīhàn, literally “stupid + man, guy”). First cited in Japanese in 1790 with the stupid guy sense.
The "Xbox fanboy" sense originates from a media interview of Akihabara retailer Messe Sanoh, where one customer stated his intention to purchase an Xbox in addition to the adult computer game Ryōjoku Chikan Jigoku.

bor

(slang, vulgar, derogatory, video games) an Xbox fanboy, Xbot


腐女子

→ English: fujoshi, fujo

zh-l

腐女子 (fǔnǚzǐ)

→ Chinese: 腐女 (fǔnǚ), 腐女子 (fǔnǚzǐ)

→ Vietnamese: hủ nữ (腐女)

Korean: 부녀자(腐女子) (bunyeoja)

腐 (fu, “rotten”) + 女子 (joshi, “woman”), a pun on homophonous 婦女子 (fujoshi, “women”).

(slang) A girl/woman who likes homosexual male relationships, a female who enjoys observing relations between gay men/boys. A female shipper.

(slang, derogatory, by extension) A female who is a fan of manga and/or anime.


マニア

音楽マニア

fervent enthusiast of something; geek; nerd; maniac


ラブライバー

Blend of Japanese ラブライブ！ (Rabu Raibu!, “Love Live!”) and English -er; equivalent to Love-Liver.

noncog

(neologism) A fan of the Love Live! franchise.


焼き豚

char siu, a style of barbecue pork wherein the meat is trussed, marinated, skewered, and then roasted

(slang, derogatory or self-deprecatory) person with an extreme love for baseball


マヨラー

From マヨネーズ (mayonēzu, “mayonnaise”) and ler (ler).


腐男子

→ English: fudanshi

[ɸɯ̟dã̠ɰ̃ɕi]


音鉄

(slang) fan of the sounds related to trains and rail transport (whistles, jingles, announcements, etc.)


鉄オタ

From 鉄道 (tetsudō, “railway”) + オタク (otaku).


腹ペコ

From 腹(はら) (hara, “stomach”) + ぺこぺこ (pekopeko, “appetite”).


おし

→ English: oshi

推しカプ

shipping two favourite chracters; putting two characters into a romantic relationship

推しグラス

drinking glass signed with an idol's signature

推しT

T-shirt showing someone's support for an idol

○○推し

推し: (idol fandom) being a devoted fan of …; … stan


バンギャル

[bã̠ŋʲɡʲa̠ɾɯ̟]


任豚

From a modified clipping of 任天堂, where the kanji 天(てん) (ten, “heaven”) is replaced by 豚(とん) (ton, “pig”), often accompanied by visual depictions of overweight Nintendo fans. Sometimes alternatively read as "ninbuta", which is said to be a corrupted compound of 任(にん) (nin), the first kanji in "Nintendo", and 仏陀(ぶつだ) (butsuda, “Buddha”), from the perception of Nintendo fans as religiously devoted to the company.


ドルオタ

From アイドルオタク (aidoru otaku, “idol otaku”).


たんおし

(idol fandom) being a fan of only one member of a group


おまいつ

Short for お前(まえ)、いつもいるな (omae, itsu mo iru na, “you're there literally all the time, huh”).

ja-r

おまえ、いつ も いる な

(idol fandom) fan who is regularly spotted at events


フォトナキッズ

Compound of フォトナ (fotona, clipping of フォートナイト (fōtonaito, “Fortnite”)) + キッズ (kizzu, “kids”).

com-ja

clipping of <i class="Jpan mention" lang="ja">フォートナイト</i> (fōtonaito, “Fortnite”)

2020 December 2, 元マクドナルド従業員たまちゃん, 秒刊SUNDAY:

泣き叫ぶ、フォトナキッズ。それも無視し、無表情でXBoxを破壊し続ける叔母はまさに狂気の沙汰。

XBox エックスボックス

Nakisakebu, Fotonakizzu. Soremo mushi shi, muhyōjō de Ekkusubokkusu o hakai shi tsuzukeru oba wa masa ni kyōki no sata.

The Fortnite kid is wailing; their aunt ignores this and continues to destroy the Xbox in what can only be called a display of insanity.

(derogatory) Fortnite kids; child Fortnite players/Fortniters


箱信者

箱信者 (canonical)
hako shinja (romanization)

[ha̠ko̞ ɕĩɲ̟d͡ʑa̠]

Compound of 箱 (hako, “box”) + 信者 (shinja, “believer, follower, or adherent of a religion”).

compound

(slang, derogatory, video games) an Xbox fanboy or fangirl, Xbot


撮り鉄

撮り鉄 (canonical)
toritetsu (romanization)


アムラー

ja-noun

アムラー • (Amurā)

From 安室奈美恵 (Amuro Namie, “Amuro Namie”) and er (er).

(slang) one who follows the fashion aesthetics of Amuro Namie


シャネラー

[ɕa̠ne̞ɾa̠ː]

From シャネル (Shaneru, “Chanel”) and er (er).


シノラー

From 篠原ともえ (Shinohara Tomoe, “Shinohara Tomoe”) and ler (ler).

lw

(slang) one who follows the fashion aesthetics of Shinohara Tomoe


キティラー

ja-noun

キティラー • (Kitirā)

From ハローキティ (Harō Kiti, “Hello Kitty”) and ler (ler).


はこおし

(idol fandom) being a fan of all members of a group


サセン

Borrowed from Korean 사생팬 (sasaengpaen), from 사생(私生) (sasaeng, “private life”) + 팬 (paen, “fan”).

(South Korean idol fandom) sasaeng (extremely obsessive K-pop fan whose fixation on an idol is unhealthy and intrusive)


モバイラー

(informal) enthusiast of handheld devices, especially early 2000s pocket computers


チカニシ

Blend of 痴漢 (chikan, “Xbot”) + 妊娠 (ninshin, “Nintendrone”)

blend

(derogatory, Internet slang, video games, vulgar) a Xbox fanboy, Xbot and a Nintendo fanboy, Nintendrone


鉄ちゃん

[te̞t̚t͡ɕã̠ɴ]


フリーク

[ɸɯ̟ɾʲiːkɯ̟]


ケロカス

Blend of ケロイド (keroido, “keloid”) + カス (kasu, “dross”)

(derogatory, Internet slang) Hiroshima Toyo Carp, a baseball team in Japan.

(derogatory, Internet slang) A fan of the Hiroshima Toyo Carp baseball team.


乗り鉄

乗り鉄 (canonical)
noritetsu (romanization)


プロ驚き屋

プロ驚き屋 (canonical)
puro odorokiya (romanization)

From プロ (puro, “professional”) + 驚(おどろ)き (odoroki, “surprise; astonishment”) + 屋(や) (-ya, “-ist”).

ja-compound

(neologism, computing, Internet slang) A user or influencer who posts excitedly about cutting-edge or upcoming technology, such as ChatGPT, in an uncritical or hyperbolic way.