Definition of morning breath
: halitosis upon awakening from sleep that is caused by the buildup of bacteria in the mouth from decreased saliva production
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
More Confusing Words—Quiz
-
- The magician
______
moved the selected card to the top of the deck.

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Spell words. Make bears.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share morning breath
Time Traveler for morning breath
The first known use of morning breath was in 1968
See more words from the same year