# subzero

> English word · Adjective · frequency rank #64,041

## Definitions
1. Less than zero, most commonly used to refer to temperature.

## Etymology
From sub- + zero.

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