Synonyms of momentous in English:

momentous

adjective

  • a momentous decision
    [Antonyms] unimportant, trivial, insignificant
  • momentous or momentary? See momentary

    Definition of momentous in:

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    Word of the day oleaginous
    Pronunciation: ˌəʊlɪˈadʒɪnəs
    adjective
    rich in, covered with, or producing oil; oily