mouthwash

noun

mouth·​wash ˈmau̇th-ˌwȯsh How to pronounce mouthwash (audio)
-ˌwäsh
: a usually antiseptic liquid preparation for cleaning the mouth and teeth or freshening the breath

Examples of mouthwash in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Ladapo also has argued that adding fluoride to public water is no longer necessary because toothpaste and mouthwash provide protection against tooth decay. Martin E. Comas, The Orlando Sentinel, 16 Apr. 2025 Dissenters also say fluoride can be received from other sources other than water, such as toothpaste or mouthwash. Evan Moore, Charlotte Observer, 8 Apr. 2025 The girl’s breath smelled of sleep, just slightly stale—no time for mouthwash, toothpaste, in her haste to see him. Joyce Carol Oates, The New Yorker, 16 Mar. 2025 Avoid commercial mouthwashes with alcohol, alcoholic drinks, and tobacco, which can dry out your mouth. Anna Giorgi, Verywell Health, 27 Dec. 2024 See All Example Sentences for mouthwash

Word History

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of mouthwash was in 1840

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Cite this Entry

“Mouthwash.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mouthwash. Accessed 22 Apr. 2025.

Kids Definition

mouthwash

noun
mouth·​wash ˈmau̇th-ˌwȯsh How to pronounce mouthwash (audio)
-ˌwäsh
: a liquid that usually kills germs and is used to clean the mouth and teeth and freshen the breath

Medical Definition

mouthwash

noun
: a liquid preparation (as an antiseptic solution) for cleansing the mouth and teeth

called also collutorium

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