裏垢

• 読み: うらあか
• ローマ字: ura aka
• 漢字の分解: 裏 (ura, back/hidden/secret) + 垢 (aka, account) → hidden account
• 発音: /u.ra.a.ka/

意味

A secret or anonymous alt account used separately from one's main public account, often for posting unfiltered or private thoughts.

A compound of 裏 (ura, 'back/hidden') and 垢 (aka, 'account'). 裏垢 is an account that most people in your real life don't know about. It is commonly used to vent frustrations, discuss taboo topics, share unpopular opinions, or engage with content you wouldn't want associated with your main identity. Having a 裏垢 is very common in Japan, especially among young people who maintain a polished image on their 本垢 (main account).

例文

1. 裏垢で本音つぶやいてるのバレたら終わる。
2. 裏垢持ってるの？何書いてるか気になる。
3. 会社の人に裏垢バレて気まずくなった。

使い方ガイド

場面: Twitter/X, Instagram, social media, casual conversation

トーン: secretive, candid

正しい言い方

• 裏垢あるけど絶対教えない。 (I have a secret account but I'm never telling you.)
• 裏垢で愚痴ってる。 (I'm venting on my alt account.)

避ける言い方

• 裏垢の存在を本垢で公言する (Don't publicly announce your secret account on your main account — that defeats the purpose)

よくある間違い

• Thinking 裏垢 is always used for something bad — many people simply use it to separate interests or maintain privacy
• Confusing 裏垢 (secret alt) with サブ垢 (secondary account that may be known to friends)

起源と歴史

Compound of 裏 (ura, hidden/back side) and 垢 (aka, account). Emerged in the early 2010s as Japanese social media users began maintaining multiple accounts for different social contexts.

文化的背景

時代: Early 2010s, tied to Japanese social media culture

世代: Teens and young adults

社会的背景: Social media users

地域メモ: Very common in Japan where maintaining a polished public image (本音と建前) extends to social media. Many young people have at least one 裏垢.