momentous

word

Definition

Very important or significant, especially because it will have a great influence on the future or a situation.

Usage & Nuances

'Momentous' is formal and often used for historic events, key decisions, or life-changing occasions. Not interchangeable with 'momentary' (which means short-lived). Commonly paired with 'occasion', 'decision', or 'event'.

Example Sentences

Moving to another country is a momentous step in anyone's life.

natural

Years later, people still talk about that momentous night.

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Graduation day is a momentous occasion.

basic

The president made a momentous decision.

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This discovery was momentous for science.

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Signing the peace treaty was a momentous event in history.

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