mouthpiece

noun

mouth·​piece ˈmau̇th-ˌpēs 

1

: something placed at or forming a mouth

2

: a part (as of an instrument) that goes in the mouth or to which the mouth is applied

3

a

: one that expresses or interprets another's views : spokesperson

b

slang : a criminal lawyer

Synonyms of mouthpiece

• spokesperson
• spokesman

Examples of mouthpiece in a Sentence

the mouthpiece of a trumpet

He's been acting as a mouthpiece for the government on questions of foreign policy.

The company has hired an attorney as a mouthpiece to answer its critics.

Recent Examples on the Web

Owala 16-Ounce Water Bottle Finding a water bottle for my kid that is easy to close, doesn’t have a silicone straw or mouthpiece, and doesn’t leak has been a journey. — Lauren Silbert, PEOPLE, 24 June 2026

Udonis Haslem was suspended Game 2 after throwing his mouthpiece in the series opener. — James Jackson, New York Times, 20 June 2026

For Netanyahu’s mouthpieces in the media, news of the ceasefire deal appeared to represent a genuine crisis. — Ruth Margalit, New Yorker, 19 June 2026

That year, French propagandist Louis Dubroca, a mouthpiece of the Napoleonic government, published a slanted, factually incorrect biography of Dessalines. — Julia Gaffield, The Conversation, 15 June 2026

Word History

First Known Use

1673, in the meaning defined at sense 1

Rhymes for mouthpiece

• apiece
• aris
• assise
• caprice
• cerise
• decease
• decrease
• eyepiece
• facepiece
• handpiece
• headpiece
• increase

Kids Definition

mouthpiece

noun

mouth·​piece -ˌpēs 

1

: the part put to, between, or near the lips

the mouthpiece of a trumpet

the mouthpiece of a telephone

2

: someone who expresses another person's ideas : spokesperson