mustache

noun

mus·​tache ˈmə-ˌstash  (ˌ)mə-ˈstash 

variants or less commonly moustache

1

: the hair growing on the human upper lip

especially : such hair grown and often trimmed in a particular style

his long mustache combed and waxed

—Henry Petroski

2

: hair or bristles about the mouth of a mammal

mustached adjective

or less commonly moustached

ˈmə-ˌstasht 

(ˌ)mə-ˈstasht

Examples of mustache in a Sentence

He used a small pair of scissors to trim his mustache.

He decided to grow a mustache.

The actor was wearing a false mustache.

Recent Examples on the Web

Their seven-song debut EP cover features an adorable Mads in a vest, white shirt and drawn-on goatee and mustache, with dad right next to him in a tank top and long blonde wig. —Gil Kaufman, Billboard, 21 Oct. 2025

Moermond said Simmons was wearing a fake mustache that was falling off and did not have a gun, WKRC reported. —Jennifer Rodriguez, Kansas City Star, 20 Oct. 2025

House Minority Leader Hakeem Jeffries is also shown in the video wearing a cartoonish sombrero and mustache. —NPR, 18 Oct. 2025

So many kids that wanted to have a Vulcan mustache or the ‘Mark of a V’ on their cheek! —Molly Guthrey, Twin Cities, 16 Oct. 2025

Word History

Etymology

Middle French moustache, from Old Italian mustaccio, from Middle Greek moustaki, diminutive of Greek mystak-, mystax upper lip, mustache

First Known Use

1585, in the meaning defined at sense 1

Phrases Containing mustache

• Fu Manchu mustache
• handlebar mustache

Rhymes for mustache

• backlash
• chumash
• eyelash
• moustache
• noncash
• potash
• rehash
• whiplash
• ash
• bash
• brash
• cache

Kids Definition

mustache

noun

mus·​tache

variants also moustache

ˈməs-ˌtash,

(ˌ)məs-ˈtash

1

: the hair growing on the human upper lip

2

: hair or bristles about the mouth of a mammal (as a walrus)