momentous
UK: məʊˈmentəs | US: moʊˈmentəs
adj. of great importance or significance, especially in its impact on future events
momentous = moment<time/importance> + ous<adjective suffix>
- moment: Derived from Latin momentum (movement, brief time, importance), from movere (to move). The sense of "importance" arose from the idea of a pivotal point in time.
- ous: A suffix forming adjectives, from Latin -osus (full of, prone to).
Etymology Origin:
The word momentous combines moment (originally tied to movement and time) with the suffix -ous, creating an adjective meaning "full of importance." The evolution reflects how a "moment" can signify not just a brief time but a critical juncture with lasting consequences.
The signing of the treaty was a momentous occasion in history.
Her promotion marked a momentous shift in her career.
The scientist made a momentous discovery that changed medicine.
Graduation day felt momentous after years of hard work.
The election results were momentous for the nation's future.