mouth·​wash | \ ˈmau̇th-ˌwȯsh How to pronounce mouthwash (audio) , -ˌwäsh \

Definition of mouthwash

: 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 The manufacturer of Listerine has emphatically rejected claims that mouthwash is a Covid-19 cure. Joshua Cohen, Forbes, 10 Dec. 2021 The range includes toothpaste, sustainably produced wooden toothbrushes, mouthwash, freshening spray, and the jewel in the crown, Aletsch, which over time mimics what the in-office gel procedure does. Didi Gluck, Town & Country, 16 Sep. 2021 Only alcohol-free mouthwash can be accepted on patients’ behalf., 12 Nov. 2021 The Czech News Agency reported that Voráček is not vaccinated, and he is quoted in a news article from Oct. 2020 as claiming that gargling mouthwash can prevent the spread of COVID-19. Tom Schad, USA TODAY, 22 July 2021 Dasani, her mother and sisters follow Tabitha to a large supply closet filled with brand-name toiletries such as Nivea cream, ACT mouthwash and Prell shampoo. New York Times, 28 Sep. 2021 Generally, mouthwash is here to reach areas that our toothbrushes simply can’t. Celeste Polanco, Essence, 1 Sep. 2021 The claim that hydrogen peroxide should be used as a daily mouthwash and instant bathroom disinfectant, among others, is PARTLY FALSE, based on our research. Nayeli Lomeli, USA TODAY, 11 Aug. 2021 Be careful not to use mouthwash immediately after brushing your teeth, by the way. Allure, 3 Aug. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mouthwash.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mouthwash

1840, in the meaning defined above

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Time Traveler for mouthwash

Time Traveler

The first known use of mouthwash was in 1840

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Dictionary Entries Near mouthwash

mouth ulcer



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Statistics for mouthwash

Last Updated

30 Dec 2021

Cite this Entry

“Mouthwash.” Dictionary, Merriam-Webster, Accessed 16 Jan. 2022.

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More Definitions for mouthwash



English Language Learners Definition of mouthwash

: a liquid that is used to clean your mouth and teeth and to make your breath smell better


mouth·​wash | \ ˈmau̇th-ˌwȯsh, -ˌwäsh How to pronounce mouthwash (audio) \

Medical Definition of mouthwash

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

called also collutorium

More from Merriam-Webster on mouthwash

Nglish: Translation of mouthwash for Spanish Speakers


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