# mask up

> English word · Verb

## Definitions
1. To put on a mask, especially a safety mask or a medical facemask.

## Etymology
Popularized in 2020 during the COVID-19 pandemic. Before that, attested but not common outside technical contexts.

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