# VX

> English word · Proper noun · frequency rank #40,510

## Definitions
1. The nerve agent O-ethyl S-[2-(diisopropylamino)ethyl] methylphosphonothioate.

## Etymology
Short for "venomous agent X".

## Easily confused with
- **v** (https://plainspell.com/en/vs/v-vs-vx)
- **VA** (https://plainspell.com/en/vs/va-vs-vx)
- **vi** (https://plainspell.com/en/vs/vi-vs-vx)
- **VR** (https://plainspell.com/en/vs/vr-vs-vx)
- **VP** (https://plainspell.com/en/vs/vp-vs-vx)
- **V8** (https://plainspell.com/en/vs/v8-vs-vx)
- **VC** (https://plainspell.com/en/vs/vc-vs-vx)
- **V2** (https://plainspell.com/en/vs/v2-vs-vx)
- **VW** (https://plainspell.com/en/vs/vw-vs-vx)
- **Vu** (https://plainspell.com/en/vs/vu-vs-vx)
- **V6** (https://plainspell.com/en/vs/v6-vs-vx)
- **VM** (https://plainspell.com/en/vs/vm-vs-vx)
- **vo** (https://plainspell.com/en/vs/vo-vs-vx)
- **VF** (https://plainspell.com/en/vs/vf-vs-vx)
- **VN** (https://plainspell.com/en/vs/vn-vs-vx)
- **V4** (https://plainspell.com/en/vs/v4-vs-vx)
- **VD** (https://plainspell.com/en/vs/vd-vs-vx)
- **VH** (https://plainspell.com/en/vs/vh-vs-vx)
- **via** (https://plainspell.com/en/vs/via-vs-vx)
- **van** (https://plainspell.com/en/vs/van-vs-vx)

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