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

Sick of It All were NYHC’s most welcoming emissaries, and their mouthpiece was Lou Koller, whose death was announced Friday. — Kory Grow, Rolling Stone, 25 July 2026

Its insulated design keeps my water ice cold for hours on end, plus its flip-straw design keeps the mouthpiece hidden from the open air during my commutes. — Clara McMahon, PEOPLE, 17 July 2026

Several times each year, His Holiness requests guidance from Kuten La, who in his role as State Oracle serves as mouthpiece for Nechung, an ancient deity and Tibet’s spiritual protector. — Charlie Campbell, Time, 9 July 2026

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