Momentous
/moʊˈmɛntəs/
Listen pronunciation
Definition
(adj) Outstanding in importance, of great consequence.
Sentence Examples
The discovery will have a momentous effect on the treatment of cancer.
The falling of the Berlin Wall was truly a momentous occasion.
CEFR Practice Quiz
The signing of the new peace treaty was a ____ event that marked the end of the long and very difficult conflict.