Something that is described as momentous would have to be an event that has a huge impact in ones life or if not ones life in another's life. A huge impact would be described as an event that changed the person in some was or a huge step forward in the right direction.
The word "momentous" comes from the Latin word "momentum," which means "movement" or "importance." "Momentous" is used to describe something of great significance or importance.
noun
The base word of "momentous" is "moment."
Ronald Weasley thinks I'm momentous and appaling.
It will be a momentous day when students stop plagiarizing sentences.
Thucydides's WROTE THE TEXT BECAUSE HE WANTED PEOPLE TO EXPERIENCE AND KNOW WHAT THE WAR WAS ABOUT THE AUDIENCE THAT WOULD BUT IT WOULD BE PEOPLE WHO WERE INTERESTED ABOUT THAT PARTICULAR WAR OR JUST WANT TO KNOW HOW THUCYDIDES DESCRIBED THE WAR AND HOW HE DESCRIBED IT
The word "momentous" has three syllables: mo-men-tous.
something that is small and that can br described by what? Minuscule ; see link to definition .
People consider the day of Martin Luther King Jr's assassination a very momentous day in history.
The adverb form of the adjective momentous is momentously. e.g. It was a momentously important event.
The part of speech for this particular word is a noun.
eternity