momentousadjective
uk/məˈmen.təs/us/məˈmen.t̬əs/very important because of effects on future events:
the momentous news of the president's death
Whether or not to move overseas was a momentous decision for the family.
Thesaurus: synonyms and related words
Very important or urgent
- all-important
- arch
- at all cost(s) idiom
- be a matter of life and/or death idiom
- burning
- chief
- considerable
- critical
- major league
- make the world go around/round idiom
- materially
- minor league
- mission-critical
- radical
- sacred
- salient
- serious
- seriously
- substantial
- substantially
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momentously
adverb uk/məˈmen.təs.li/us/məˈmen.t̬əs.li/
momentousness
noun [ U ] uk/məˈmen.təs.nəs/us/məˈmen.t̬əs.nəs/