momentous

Definition

Outstanding in importance, of great consequence.

Etymology

From moment (“weight, importance”) + -ous.

Example Sentences

• "The reason why I did not publish this book till the end of the last sessions of parliament was, because I did not care to interfere with more momentous affairs."
• ""It has been a momentous month, and I hope we shall all retain healthful recollections of it as long as we live.""
• "What to the other parties was merely the sale of a ship was to him a momentous event involving a radically new view of existence."