morning breath


Definition of 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 Few things are as immediate of a mood killer as coffee-and-Mountain-House-Curry morning breath. Joe Jackson, Outside Online, "Gear to Get Your S.O. Hooked on Hiking," 23 Apr. 2018 These same gases also contribute to the stink of morning breath. Sam Kean, Slate Magazine, "Lessons on Flatulence From a Fart Artist," 24 July 2017

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

First Known Use of morning breath

1968, in the meaning defined above

Keep scrolling for more

Learn More about morning breath

Time Traveler for morning breath

Time Traveler

The first known use of morning breath was in 1968

See more words from the same year

Statistics for morning breath

Cite this Entry

“Morning breath.” The Dictionary, Merriam-Webster Inc., Accessed 24 January 2020.

Keep scrolling for more

More Definitions for morning breath

morning breath

morn·​ing breath | \ ˈmȯr-niŋ- How to pronounce morning breath (audio) \

Medical Definition of morning breath

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

More from Merriam-Webster on morning breath

Rhyming Dictionary: Words that rhyme with morning breath

Comments on morning breath

What made you want to look up morning breath? Please tell us where you read or heard it (including the quote, if possible).


a feeling of well-being or elation

Get Word of the Day daily email!

Test Your Vocabulary

Intact Latin Quiz

  • roman tablet
  • What did focus mean in Latin?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!