1
: not able to be argued about or changed : final and settled
We need a definitive answer to this question.
The court has issued a definitive ruling.
2
: complete, accurate, and considered to be the best of its kind
a definitive biography
a definitive collection of the band's albums
Cite this Entry
“Definitive.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/definitive. Accessed 19 Jun. 2026.
Copy Citation
