Definition of the mother of all
—used to say that something is larger, better, worse, etc., than all other things of the same kind It has been described as the mother of all construction projects.
Test Your Vocabulary
Commonly Confused Words Quiz
-
- I went to the ______ store to buy a birthday card.

Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share the mother of all