(きどく)スルー

きどくするー
noun
leaving a message on read; ignoring a read message
informaltechnology
1. leaving a message on read, read-ignoring
Reading someone's message (as shown by the read receipt) but not replying. Originally associated with LINE's 既読(きどく) (read) indicator, now used broadly for any messaging app.
既読(きどく)スルーされた
I was left on read.
既読(きどく)スルーしないで
Don't leave me on read.
They might just be busy, but if the read-ignoring continues, it makes me anxious.

Components: 既読(きどく) (already read) + スルー (through, from English "through" meaning to ignore/let pass).

Originated with the LINE messaging app, which shows 既読(きどく) next to messages that have been read. Used with する: 既読(きどく)スルーする.

Related words

This phenomenon has become a significant source of social anxiety, especially among younger people, as it implies the recipient saw the message but deliberately chose not to respond.