Search Dictionary
Definition of mustache
mustache
/ˈmʌstæʃ/
(UK: moustache)
mus · tache
Plural:mustaches
•Adjective:mustached
mustache Lexical Profile
CEFR
A2
Grade
3
Tier
1
Usage
Top 5k
mustache Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
American The hair growing on the human upper lip, typically referring to that of an adult male, especially when allowed to grow and styled.
Example
"He decided to grow a thick mustache to give himself an older, more distinguished appearance."
2
A natural growth of hair, bristles, or distinctive anatomical markings around the mouth or beak of an animal.
Example
"The walrus is easily recognizable by the dense, bristly mustache overhanging its tusks."
Synonyms
View all synonyms for mustacheWord Nuance & Usage
"Mustache" is the standard American English spelling, whereas "moustache" is the preferred spelling in British English.
Word Origin & Etymology
Borrowed from Middle French 'moustache', via Italian 'mostaccio', ultimately tracing back to the ancient Greek 'mystax' meaning 'upper lip' or 'mustache'.
Cite this Entry
Wordmom. (2026). Definition of Mustache. In Wordmom Dictionary. Retrieved Oct 14, 2026, from https://wordmom.com/dictionary/mustache