morning breath


: halitosis upon awakening from sleep that is caused by the buildup of bacteria in the mouth from decreased saliva production

Examples of morning breath in a Sentence

Recent Examples on the Web If mouth breathing could be causing bad morning breath, Dr. Sulitzer recommends investing in a new toothbrush that can help remove all food and residue buildup from your teeth and gums, as well as a water flosser to thoroughly clean the gums and rehydrate your mouth. Jaclyn Smock, Allure, 10 Feb. 2023 Your morning breath sends your partner running. Samantha Lefave, Redbook, 3 Aug. 2018 No more musty morning breath after sipping on Super Coffee Iced Keto coffee first thing in the morning Protein Coffee Co Nutrition Shake Wake up and fuel your body with Protein Coffee Co Nutrition Shake! Amber Smith, Discover Magazine, 28 Feb. 2023 But unlike very temporary morning breath and mussed hair, there can be a long-lasting impact on our skin's smoothness. Marci Robin, Allure, 12 Apr. 2022 But mind reading causes problems for the couple when Alexa orders mouthwash because of Johansson’s morning breath and activates a blender when Johansson doesn’t want to hear Jost talk about a spray tan. Mae Anderson, Anchorage Daily News, 11 Feb. 2022 Trump’s family are a far departure from the authentic intimacy the Obama family revealed (think Michelle talking about Barack’s morning breath). Natalie Gontcharova,, 26 Aug. 2020 Few things are as immediate of a mood killer as coffee-and-Mountain-House-Curry morning breath. Joe Jackson, Outside Online, 23 Apr. 2018 These same gases also contribute to the stink of morning breath. Sam Kean, Slate Magazine, 24 July 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'morning breath.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1968, in the meaning defined above

Time Traveler
The first known use of morning breath was in 1968

Dictionary Entries Near morning breath

Cite this Entry

“Morning breath.” Dictionary, Merriam-Webster, Accessed 19 Apr. 2024.

Medical Definition

morning breath

morn·​ing breath ˈmȯr-niŋ- How to pronounce morning breath (audio)
: halitosis upon awakening from sleep that is caused by the buildup of bacteria in the mouth due to decreased saliva production
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