momentous adjective - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of momentous adjective from the Oxford Advanced American Dictionary

momentous

adjective

NAmE//moʊˈmɛntəs//

, NAmE//məˈmɛntəs//

very important or serious, especially because there may be important results synonym historic a momentous decision/event/occasion

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