鍵垢

• Reading: かぎあか
• Romaji: kagi aka
• Kanji breakdown: 鍵 (kagi, key/lock) + 垢 (aka, internet slang for account, from アカウント) → locked account
• Pronunciation: /ka.gi.a.ka/

Meaning

A private or locked social media account where posts are only visible to approved followers.

A compound of 鍵 (kagi, 'lock/key') and 垢 (aka, internet slang for 'account,' borrowed from the kanji meaning 'grime' because アカウント shortens to アカ). Setting an account to private is called 鍵をかける ('locking it'). Users often switch to 鍵垢 after 炎上, to avoid アンチ, or simply to limit their audience to close friends. The opposite is 公開垢 (kōkai aka, public account).

Examples

1. 鍵垢にしたから知り合いしか見れないよ。 I set my account to private so only people I know can see it.
2. あの人鍵垢だからフォローリクエスト送らないと見れない。 That person's account is locked so you have to send a follow request to see their posts.
3. 炎上してから鍵垢にする人多いよね。 A lot of people switch to a private account after getting flamed online.

Usage Guide

Context: Twitter/X, Instagram, social media

Tone: descriptive, informational

Do Say

• 鍵垢にしてるから安心して投稿できる。 (I can post without worry since my account is private.)
• あの人鍵垢だよ。 (That person's account is locked.)

Don't Say

• 鍵垢の内容をスクショして公開する (Don't screenshot and share content from a private account — it's a serious breach of trust)

Common Mistakes

• Not realizing 垢 (aka) means 'account' in internet slang — it literally means 'grime' but is used as a pun on アカ (account)
• Assuming 鍵垢 content is truly private — approved followers can still screenshot and share

Origin & History

Compound of 鍵 (kagi, key/lock) and 垢 (aka, account). 垢 became internet slang for 'account' because アカウント (akaunto) abbreviates to アカ, which is a homophone of 垢. Common since the early 2010s on Twitter.

Cultural Context

Era: Early 2010s with Twitter's growth in Japan

Generation: Millennials and Gen Z

Social background: Social media users

Regional notes: Used across Japan. Japanese Twitter users frequently switch between public and private accounts depending on circumstances.