Synonyms of momentous
significantDictionary • the momentous decision to send in the troops
significant • It is the first drug that seems to have a significant effect on this disease.
important • an important economic challenge to the government
serious • I regard this as a serious matter.
vital • a blockade which could cut off vital oil and gas supplies
critical • The incident happened at a critical point in the campaign.
crucial (informal) • the most crucial election campaign in years
grave • He says the situation in his country is very grave.
historic • the historic changes in Eastern Europe
decisive • his decisive victory in the elections
pivotal • The Court of Appeal has a pivotal role in the English legal system.
fateful • What changed for him in that fateful year?
weighty • Surely such weighty matters merit a higher level of debate?
consequential • From a medical standpoint, a week is usually not a consequential delay.
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consequentialSomething that is consequential is important or significant.
• From a medical standpoint, a week is usually not a consequential delay.
criticalA critical time, factor, or situation is extremely important.
• The incident happened at a critical point in the campaign.
now or never
now or never
crucial (informal)If you describe something as crucial, you mean it is extremely important.
• the most crucial election campaign in years
Thesaurus for momentous from the Collins English Thesaurus