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 : spokesman

b

slang : a criminal lawyer

Synonyms

• 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

Says a legacy mouthpiece who inherited a platform instead of earning it. —Emma Marsden, MSNBC Newsweek, 1 Sep. 2025

While suona reeds are traditionally plant-based, Zhen flattens segments of plastic straws to fit into his mouthpiece. —William Tong, Chicago Tribune, 7 Aug. 2025

Superintendent of Public Instruction Tony Thurmond is a mouthpiece for teachers’ unions. —The Editorial Board, Oc Register, 3 Aug. 2025

Israel banned Al Jazeera from operating in its territory in May 2024 and has called it a mouthpiece of Hamas. —Kathleen Magramo, CNN Money, 23 July 2025

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