Definition of motormouth
: a person who talks excessively
Test Your Vocabulary
Which Word Does Not Belong?
-
- Which of these words does not mean "nonsense"?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share motormouth
Time Traveler for motormouth
The first known use of motormouth was in 1955
See more words from the same year