abandoned account; unused account; old account
Internet slang for a social media or online service account that is no longer actively used, often left dormant for a long time.
His Twitter account has become an abandoned account now.
I cleaned up my abandoned accounts and deleted the ones I wasn't using.
Standard kanji spelling for this internet slang term.
Variant spelling using katakana for アカ; also common in informal online writing.
Compound of 廃 (hai, 'abandoned, disused') and 垢 (aka), a slang abbreviation of アカウント (account). The exact origin is uncertain, but it likely emerged in online communities.