OMINOUS Meaning of OMINOUS in English adj. 1 threatening; indicating disaster or difficulty. 2 of evil omen; inauspicious. 3 giving or being an omen. ominously adv. ominousness n.[ L ominosus (as OMEN) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012