# inb4

> English word · Conjunction

## Definitions
1. Preemptively responding to a predicted circumstance or response.

## Etymology
From in before.
It originated on 4chan: on threads that users thought would be locked, they would comment "in before the lock", or "I got a comment in before the thread locked."
Before then got abbreviated independently into B4 or b4.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/inb4