Definition of past one's prime
1
: no longer still active and in good health
The dog was past his prime.
2
: no longer as good at something as one once was
As a singer, he is past his prime.
Test Your Vocabulary
Which Word Does Not Belong?
-
- Which of these words does not mean "nonsense"?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share past one's prime