Ominous Definition

Menacing; threatening.
Ominous black clouds; ominous rumblings of discontent.
American Heritage
Of or serving as an omen; esp., having the character of an evil omen; threatening; sinister.
Webster's New World

Origin of Ominous

  • From Latin ominosus (“full of foreboding"), from omen (“forebiden fruit, omen"), from os (“the mouth") + -men

    From Wiktionary

  • Latin ōminōsus from ōmen ōmin- omen

    From American Heritage Dictionary of the English Language, 5th Edition

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