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

Asserting that kind of control over TikTok could turn the app into a mouthpiece of a government — ironically, not China’s, but our own. —Emily Baker-White, Forbes.com, 15 Sep. 2025

Over the course of a decade, Kirk successfully transformed Turning Point into a nationwide powerhouse, styling himself as a mouthpiece for the youth wing of the MAGA movement. —Brian Stelter, CNN Money, 10 Sep. 2025

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

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