Definition of the last/final word
1
: the final thing said in an argument or a discussion
Your mother's decision is the final word on the matter. Why do you always have to have the last word?
2
: the power to make a final decision
The judge will have the last word on the divorce agreement.
3
informal
: the most modern or best one of its kind
This is the last word in wireless phones. The van's design is the last word in safety.
Test Your Vocabulary
Who Knew?
-
- What is a ruelle?

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